What global phenomenon has caused some organisms to move towards the poles or to
higher altitudes?
Answers
Related Questions
Which product of photosynthesis moves through the food web until it becomes stored in the earth?
A carbohydrates
B carbon dioxide
C oxygen
D water
Answers
Which option would help maintain homeostasis during exercise?
A. developing goose bumps on the skin
B. increasing the amount of water excreted from the kidneys
C. speeding up the rate of breathing
D. decreasing the heart rate
Pls answer this right I am using all my points on this nvm just get the points
Answers
Answer:
I believe the answer is B
Answer:
I think it is B or C
Explanation:
I said I think
Set up a Punnett square using the parent genotype listed below (Round seeds are dominant to wrinkled seeds)
RR X Rr
What % of the offspring will be round?
0
25
50
75
100
Answers
Answer:
The correct answer would be - 100
Explanation:
It is given that round seeds caused by allele R is dominant over the r which is responsible for the wrinkled seeds. The cross between plants with RR which is round seed and Rr that is heterozygous for the round seed plant,
The possibilities of the round seed plant by the above cross can be found with the help of Punnett square:
Gametes: R, R and R, r
Cross
R R
R RR RR
r Rr Rr
There are two dominant and two heterozygous round seed offsprings produces, however phenotypically all the offsprings are round, therefore 100% of the offspring will be round.
Please describe this picture using directional terminology, body planes and body movements.
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The human body is a complex organism and understanding its structure and functions requires a thorough knowledge of directional terminology, body planes, and body movements. In this image, we can see a person performing a side plank exercise which is an effective core-strengthening exercise.
We can also use directional terminology to describe the person's movements. The person is performing a lateral flexion to the side while maintaining an isometric contraction of the core muscles. The movement involves the transverse axis of the body, which runs from front to back, perpendicular to the frontal plane.
In conclusion, this picture shows a person performing a side plank exercise, positioned on the frontal plane and performing a lateral flexion movement. The person is using their core muscles to maintain the position while one arm is supporting their weight and the other arm is extended towards the ceiling.
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what is difference between biogas and ethanol?
Answers
Ethanol can be produced from biomass, therefore it is also called, a renewable fuel. In general, the sugar contained in the biomass is metabolized in the absence of oxygen, producing ethanol and carbon dioxide.
Which of the following contributes to the diversity of an ecosystem?
Increased keystone species
Reduced species richness
Increased invasive species
Increased foundation species
Answers
Answer:
Increased foundation species
Explanation:
Biodiversity refers to the variation in the species of organisms present in a particular ecosystem. It refers to the number of the different kinds of living organisms existing in that ecosystem. One way to contribute to how diverse an ecosystem is i.e. how rich in biological species are in that ecosystem, is an INCREASED THE FOUNDATION SPECIES.
Foundation species are species of organisms that are involved in the building of a community's structure. The role of foundation species encourage the inhabitance of other living species, hence, contributing to diversity.
Please tell us two things that PAL does to develop human
resources.
Answers
The Program for Alternative Learning (PAL) develops human resources through vocational training and skills development programs.
PAL offers vocational training programs that equip individuals with practical skills and knowledge in various fields, enabling them to pursue employment opportunities and contribute to the workforce. Additionally, PAL provides opportunities for personal and professional growth through workshops, seminars, and mentoring, fostering the development of essential skills and qualities required in the job market.
PAL's focus on vocational training and skills development programs demonstrates its commitment to nurturing and enhancing human resources. By equipping individuals with valuable skills and providing them with opportunities for personal and professional growth, PAL plays a vital role in empowering individuals, enhancing employability, and contributing to the development of human resources in the community.
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Which of the following statements concerning chorionic villus sampling is false? A. The fetal cells obtained usually do not need to be cultured before analysis. B. It is usually performed between the 10th and 12th weeks of pregnancy. C. Biochemical analyses can be performed on fetal cells. D. It has fewer complications than does amniocentesis. E. A karyotype can be made from fetal cells.
Answers
The false statement concerning chorionic villus sampling (CVS) is option D: It has fewer complications than does amniocentesis. In reality, CVS carries a slightly higher risk of complications compared to amniocentesis, although the overall risks are generally low.
Chorionic villus sampling (CVS) is a prenatal diagnostic procedure used to obtain a small sample of placental tissue (chorionic villi) for genetic testing. While most of the statements regarding CVS are true, option D is false.
CVS does carry a slightly higher risk of complications compared to amniocentesis, another prenatal diagnostic procedure. The potential risks associated with CVS include a small risk of miscarriage, infection, and potential limb abnormalities in the fetus. However, it's important to note that the overall risks are generally low, and the procedure is considered safe when performed by trained healthcare professionals.
The other statements regarding CVS are true. Option A is true because fetal cells obtained through CVS are usually ready for analysis without the need for culture. Option B is true as CVS is typically performed between the 10th and 12th weeks of pregnancy. Option C is true as biochemical analyses can be performed on fetal cells obtained through CVS. Option E is also true as a karyotype, which is a chromosomal analysis, can be made from the fetal cells obtained during CVS.
In summary, the false statement regarding chorionic villus sampling (CVS) is option D, which suggests that CVS has fewer complications than amniocentesis. In reality, CVS carries a slightly higher risk of complications, although the overall risks are generally low.
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True or false
Transpiration pull will be stronger on a hot, humid day more than on a hot
dry day.
Answers
Arwan finds a piece of quartz while hiking in the mountains. When he returns to school, he takes it to his science teacher. She helps him determine the mass to be 788.9 g. She also tells Arwan that the density of quartz is 2.6 .
Answers
The volume of Arwan’s piece of quartz is 303.42 cm³
What is volume?Volume is described as a measure of occupied three-dimensional space or the amount of space that a substance or object occupies, or that is enclosed within a container.
Mass of the Quartz piece brought by Arwan = 788.9 g
Density of the quartz = 2.6g/ cm³
Density of the substance is described as mass present in per unit volume of the substance. It is measured in gram per centimeter cube.
Density = mass/volume
2.6 = 788.9/ volume
volume = 303.42 cm³ .
Density is denoted as mass of a unit volume of a material substance. The formula for density is d = M/V, where d is density, M is mass, and V is volume.
Density has the units of measurement in mass divided by volume such as grams per centimeters cube (g/cm3) or kilograms per liter (kg/l)
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The complete question is:
Arwan finds a piece of quartz while hiking in the mountains. When he returns to school, he takes it to his science teacher. She helps him determine the mass to be 788.9 g. She also tells Arwan that the density of quartz is 2.6 . What is the volume of Arwan’s piece of quartz?
You have a cell, with a semi-permeable
membrane and a 1.5% potassium
concentration. You put it into a solution of
1.0% potassium. Is the solution hypertonic or
hypotonic? What direction would you expect
water to flow? What do you expect to see
happen to the cell?
Answers
Explain what happens to the level of the sucrose solution in the glass tube
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The level of sucrose solution will rise in the glass tube because water molecules will pass through the semipermeable membrane into the tube as water potential is higher outside than inside the tube.
What is osmosis?Osmosis is the movement of water molecules from a region of low solute concentration or high water potential to a region of high solute concentration or low water potential through a semipermeable membrane until equilibrium concentration is attained.
The movement of water molecules is based on a concentration gradient, from a region where there are more water molecules to a region where there are fewer water molecules.
Thus, this could be the answer.
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A new team of epidemiologists was tasked with examining the association between measles vaccination (exposure) and developing measles (outcome) in a retrospective cohort study of school children in Washington, D.C. during 2008. In 2008, 21 school children were diagnosed with measles while 138 children never acquired measles. Health records from 2004 showed that 18 of the 21 measles cases were vaccinated, while 134 of 138 non-cases were vaccinated.
What following interpretation should the team of epidemiologists make regarding the calculated relative risk obtained in question number 28?
a. The relative risk is less than 1.0, indicating a decreased risk "for the exposed (vaccinated) children.
b. The relative risk is greater than 1.0, indicating an increased risk for the exposed (vaccinated) children.
c. The relative risk is equal to 1.0, indicating the risk for the exposed (vaccinated) children is equal to the risk in the non- exposed children.
d. Not sufficient evidence to generate an interpretation of relative risk.
Answers
The following interpretation that the team of epidemiologists should make regarding the calculated relative risk obtained in question number 28 is: The relative risk is greater than 1.0, indicating an increased risk for the exposed (vaccinated) children. The correct option is B).
A cohort study is a research study design in which one or more samples are followed up to establish the relationship between exposure and outcome variables. In this study, epidemiologists were assigned to study the link between measles vaccination and the development of measles in a retrospective cohort study of school children in Washington, D.C. in 2008.
A retrospective cohort study is a study that follows up on previous exposure. Exposure and outcome data are collected from past records or interviews with patients. They're less expensive than prospective studies and provide faster answers.
Relative risk is the ratio of the risk of developing an outcome among those exposed to a risk factor compared to the risk among those who are not exposed. Therefore, the relative risk ratio greater than 1.0 indicates that those exposed (vaccinated) are more likely to develop measles.
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which three organs help a plant carry out photosyntesis
Answers
Answer:
roots, stems, and leaves.
Explanation:
The leaves are the primary photosynthetic organs of plants, serving as key sites where energy from light is converted into chemical energy.
1. Which of the following is an example of sensitization:
You blink each time your eye doctor gives you a puff of air in your eyes.
A dog was hit by his previous owner, and now the dog cowers each time his new owner reaches out to pet him.
You no longer feel your shirt touching your skin.
You're walking on the sidewalk and a bicyclist almost hits you, so you jump out of the way.
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The example of sensitization from the given alternatives is that 'A dog was hit by his previous owner, and now the dog cowers each time his new owner reaches out to pet him.'
Sensitization refers to the process in which an organism becomes more sensitive to stimuli, both good and bad. It happens when the body's nervous system becomes oversensitized to a particular stimulus that it begins to respond even to weaker or non-threatening stimuli.
The example given in the first option refers to a simple reflex action that occurs in response to the puff of air that is blown into the eyes during the eye examination. The third option is about sensory adaptation, which occurs when sensory receptors are exposed to stimuli for an extended period, resulting in a reduction in sensitivity. The fourth option refers to the fight or flight response that occurs as a result of a threatening stimulus, in which an individual's body prepares to confront or flee from danger.
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the energy that flows through most biological systems on earth ultimately comes from which source?
Answers
The energy that flows through most biological systems on Earth ultimately comes from the sun.
What is solar energy ?
Solar energy is energy that is derived from the sun's radiation. The sun is a powerful source of energy, and it radiates large amounts of energy in the form of light and heat. This energy can be captured and converted into other forms of energy, such as electricity or thermal energy, using various technologies
Sun rays comes in the form of sunlight, which is captured by plants during photosynthesis and then transformed into chemical energy that is used by organisms in the food chain. This process is the foundation of most ecosystems on Earth and allows for life to thrive.
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DNA is the genetic material that makes up living things, and folic acid plays an important role in the formation of DNA. Jon wants to study the effect of folic acid on DNA formation in microbes. Which statement accurately describe the variables in this study?
A.
The amount of folic acid and DNA synthesized are both dependent variables.
B.
The amount of folic acid and DNA synthesized are both independent variables.
C.
The amount of folic acid is the independent variable, and the DNA synthesized is the dependent variable.
D.
The amount of folic acid is the dependent variable, and the DNA synthesized is the independent variable.
E.
The amount of folic acid and DNA synthesized are neither dependent nor independent variables
Answers
Answer:
C
Explanation:
C:
Answer:
C
Explanation:
c
Put the steps of Protein Synthesis below into the correct order.
4 points
Step 1
Step 2
Step 3
Step 4
A Protein
molecule is
produced
An mRNA
molecule is
produced
mRNA interacts
with a Ribosome
DNA interacts
with RNA
polymerase
Answers
Step 2: mRNA molecule is produced
Step 3: mRNA interacts with a ribosome
Step 4 protein molecule is produced
The correct order is DNA interacts with RNA polymerase (1), the mRNA molecule is generated (2), mRNA interacts with a ribosome, and protein is produced (4).
What is transcription?Transcription (gene transcription) is the process by which a fragment of DNA is employed to generate an mRNA.
This messenger RNA (mRNA) then travels to the ribosomes in the cytoplasm to generate a protein.The process of translation refers to the protein synthesis by an mRNA template.In conclusion, the correct order is DNA interacts with RNA polymerase (1), the mRNA molecule is generated (2), mRNA interacts with a ribosome, and protein is produced (4).
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In order for a chemical reaction to be quicker and work more efficiently, the chemical
reaction might us what type of molecule to lower the activation energy?
Phospholipid
Wax
Monomer
Catalyst
Answers
What’s your favorite aquarium fish
Answers
A plant nursery only grew one type of tomato. All of their tomatoes died from the same disease. What was most likely true of the tomato plant population?
a. It had too little biodiversity
b. It had a lot of resistance to disease
c. It had a few plants that were resistant to disease
d. It had too much genetic variation
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The statement that is most likely true of the tomato plant population after all their tomatoes died from the same disease is that it had too little biodiversity. The correct answer is option a.
If all the tomatoes in the nursery died from the same disease, it suggests that the plant population lacked genetic diversity. When a population has low biodiversity, it means that the individuals share similar genetic traits and are susceptible to the same diseases or environmental challenges.
In this case, since all the plants succumbed to the disease, it indicates that they did not possess the genetic variation necessary to resist or fight off the pathogen effectively.
Having a higher level of genetic diversity within a plant population increases the chances of some individuals possessing genetic traits that provide resistance or tolerance to diseases. This diversity allows for a greater likelihood of survival in the face of diseases or other adverse conditions.
Therefore, the most likely explanation is that the tomato plant population had too little biodiversity, making them more susceptible to the disease.
So, the correct answer is option a. It had too little biodiversity
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Select any one behavior (classified as abnormal in the DSM) that can be dangerous to an individual’s self or to others. Describe the characteristics of the selected behavior, cite any one pertinent study that relates to the chosen behavior, and discuss the findings of the study. You can refer to reliable online resources, such as .edu and .org sites, to obtain information about the selected disorder and relevant studies pertaining to it.
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One behavior classified as abnormal in the DSM (Diagnostic and Statistical Manual of Mental Disorders) that can be dangerous to an individual's self or others is Intermittent Explosive Disorder (IED).
IED is characterized by recurrent outbursts of aggression, marked by verbal or physical aggression that is out of proportion to the provocation or stressor. These outbursts are impulsive and may result in physical harm to oneself, others, or property.
One pertinent study related to IED is titled "Prevalence, Correlates, Disability, and Comorbidity of DSM-IV Intermittent Explosive Disorder" by Kessler et al. (2006).
The study was published in the Archives of General Psychiatry and aimed to estimate the prevalence of IED, examine its sociodemographic correlates, and assess its impact on individuals' functioning and comorbidity with other mental disorders.
The findings of the study indicated that the lifetime prevalence of IEDs was 5.4%. Individuals with IEDs were more likely to be younger, male, and have lower education levels.
They also had higher rates of comorbidity with other psychiatric disorders, including mood and anxiety disorders. IED was associated with significant impairment in work, school, and social functioning.
This study highlights the importance of recognizing and addressing IEDs as potentially dangerous behavior. Understanding the prevalence, correlates, and impact of IED can help inform effective interventions and treatments to reduce the risk of harm to oneself and others.
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Which toxic substance is often used to extract gold and results in harmful environmental effects?a. carbon dioxideb. fluoridec. sulfur dioxided. acid mine drainagee. cyanide
Answers
The toxic substance is often used to extract gold and results in harmful environmental effects is Cyanide.
The toxicity of cyanides and their environmental effect are well established. They are, nevertheless, still utilized in the mining, galvanic, and chemical industries. Cyanides are emitted in various ways to all elements of the environment as a result of industrial activity.
Cyanide can be found in nature as cyanogenic glycosides in plant seeds. Excessive intake might result in negative side effects. However, the most prevalent source of cyanide is environmental tobacco smoke (ETS).
Cyanide may be converted by living organisms into less harmful chemicals that are expelled with physiological fluids. The purpose of this study is to evaluate current understanding on the behavior of cyanide in the environment and its influence on human health and life.
Hydrogen cyanide and cyanides are employed in a variety of sectors, including silver and gold mining. They are also utilized in the plastic manufacture of various colors, as well as in chemical laboratories. Mines, metallurgical industries, and automobile exhaust gas are all causes of pollution in the environment.
Cyanide ions enter the environment mostly through wastewater. These chemicals can also enter the environment as a result of fires in factories and homes, as well as cigarette smoke.
So, the correct option is Cyanide.
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: Level I: Reviewing Facts and Terms (Bloom's Taxonomy: Comprehension)
26) Aldosterone
A) is secreted in response to elevated levels of sodium in the blood.
B) promotes sodium retention in the kidneys.
C) helps decrease blood volume.
D) increases the concentration of sodium in urine.
E) functions in pH regulation.
Answers
Aldosterone promotes sodium retention in the kidneys. The correct option is B.
Principal cells respond to aldosterone by absorbing sodium and excreting potassium into the lumen. Exchanges of hydrogen ions and potassium ions take place in alpha intercalated cells, which are found in the late distal tubule and collecting duct. Potassium is absorbed while hydrogen is excreted into the lumen.
The body loses potassium and retains more sodium as a result of an excess of aldosterone, which raises blood pressure. Heart disease and stroke risk are higher for those who have this condition. Cortisol and aldosterone are two steroid hormones that are secreted by the adrenal gland. The correct option is B.
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PLEASE ANSWER QUICKLY
Answers
Answer:
B
Explanation:
Match the term to the most correct definition. The process of determining the future value of an investment made today: The process of determining the present value of money to be received in t future: Equal periodic payments of principal and interest to repay any investment: The periodic repayment of principal and interest for a given loan: This TVM calculator key is used to enter or compute periodic level payments, such as monthly payments on a fixed rate mortgage: The value of a stream of payments and/or single future amount to be received over a specified number of discounting periods: The sum of the present values of all future cash flows, netted against the initial investment: The general term for the annual return provided by cash flows such as stock dividends or bond coupon payments: The general term for the annual return provided by the growth or increase in value of the investment itself, separate from annual cash flows: The percentage rate earned on each dollar invested for the entire time it is invested, this includes both the periodic and appreciation return:
Answers
The process of determining the future value of an investment made today is called compounding.
Compounding refers to the process of calculating the future value of an investment by considering the initial amount invested, the interest rate, and the time period. It takes into account the concept of earning interest on both the principal amount and any accumulated interest. Through compounding, the investment grows over time as the interest is added to the principal, generating additional returns. This allows investors to estimate the value of their investment at a future date, taking into account the effects of compound interest. It is an essential concept in finance and helps individuals and businesses make informed decisions regarding their investments.
In compounding, the future value of an investment is determined by considering factors such as the interest rate, the length of the investment period, and the frequency of compounding. The more frequent the compounding, the greater the future value of the investment. This concept is widely used in various financial calculations, such as calculating the growth of savings accounts, estimating the value of retirement funds, or assessing the profitability of long-term investments. Compounding allows investors to understand the potential growth of their investments over time and make strategic decisions accordingly. It highlights the power of time and compound interest in generating wealth and achieving financial goals.
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En la meiosis, el entrecruzamiento (recombinación génica entre cromosomas) o crossing over ocurre durante la: *
Answers
Answer:
Profase I
Explanation:
La Profase I es la primera etapa de la meiosis en la cual el material genético se condensa para formar los cromosomas y se desarrolla el huso acromático (huso meiótico). El entrecruzamiento, también conocido como sobrecruzamiento o crossing-over (por su nombre en inglés), es un proceso que consiste en el intercambio de material genético entre cromátidas no hermanas de cromosomas homólogos. El entrecruzamiento se produce durante la Profase I, es decir, durante el período inicial del primer ciclo celular meiótico (meiosis I). El sobrecruzamiento tiene una importancia fudamental desde el punta de vista evolutivo ya que este fenómeno incrementa la diversidad genética de las gametas obtenidas mediante este proceso.
how can complementary protein foods help you meet your protein requirements?
Answers
Answer:
combining plant protein sources to achieve a better amino acid
Explanation:
Bringing it all together. Protein complementation is combining plant protein sources to achieve a better amino acid balance than either would have alone. Because of differences in amino acid make-up, when plant sources are combined, the strengths of one make up for the deficiencies in another
dna is composed of repeating structual units called
Answers
Answer:
The structural units are called base pairs
Explanation:
They're called base-pairs, but if you want to get more specific, Base pairs are usually made of adenine, thymine, guanine, and cytosine.
Answer:
dna is composed of repeating structure units called nucleotides
What is the melting point of a substance
Answers
depending on what it is for water it is 32°F
steel is 2500°F
aluminum 1,221°F
zinc is 787.2°F
sorry i cant put all the melting points
unless u mean
Melting point, temperature at which the solid and liquid forms of a pure substance can exist in equilibrium. As heat is applied to a solid, its temperature will increase until the melting point is reached. More heat then will convert the solid into a liquid with no temperature change.