Why are excess nutrients a problem?
Answers
Answer:
Excess nutrients are a problem because they cause nutrient pollution in bodies of water. This pollution can feed dangerous algae and can kill things that make oxygen.
Related Questions
Human impact on ecosystems would most likely lead to secondary succession over primary succession.truefalse
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Secondary succession over primary succession would most likely result from the impact of humans on ecosystems. So it is true.
A biological community can be wiped out by human actions like logging or clearing land to create urban or agricultural environments. A biological community can be so drastically altered by practices like overfishing or overgrazing by animals that another community can take its place. Secondary succession can start as a result of a variety of disturbances, including fire, flooding, windstorms, and human activity (such harvesting of forests). By changing the rate at which ecological succession naturally occurs, humans have an impact. By placing plants in the soil, which aids in the secondary succession process's initiation, humans can speed up the rate of succession.
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A group of students were trying to understand how meiosis works. They picked a bunch of dandelions in order to examine the developing seeds and found two distinct groups of cells, A & B.
A 2 column table with 4 rows. Column 1 is labeled Observation # with entries I, I I, I I I, I V. Column 2 is labeled Prediction with entries the cells in group B had chromosomes in 2 distinct lines; the cells in group A divided and produced 2 daughter cells; sister chromatids were pulled apart by microtubules in group A; chromosomes were made up of 2 sister chromatids in group b.
If the students wished to determine which cells are undergoing meiosis I or meiosis II, which observations would be useful to help with making the distinction?
I & II
I & III
II & IV
III & IV
Answers
By using these observations, the students can differentiate between cells undergoing meiosis I (group A) and meiosis II (group B).
To determine which cells are undergoing meiosis I or meiosis II, the students can use observations III and IV.
Observation III states that the cells in group A divided and produced 2 daughter cells.
This is characteristic of meiosis I, where a cell undergoes division to produce two daughter cells with half the number of chromosomes as the parent cell. In meiosis II, the daughter cells from meiosis I divide again to produce four cells with a single set of chromosomes.
Observation IV states that chromosomes were made up of 2 sister chromatids in group B.
This indicates that group B cells are in meiosis II, where the sister chromatids are pulled apart by microtubules to separate into individual chromosomes.
By using these observations, the students can differentiate between cells undergoing meiosis I (group A) and meiosis II (group B).
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in humans, pku (phenylketonurea) is a disease caused by an enzyme inefficiency at steps a in the following simplified biochemical pathway. the disease aku (alkaptonuria) is caused by a deficiency in the enzyme for step b in the diagram. a person with pku marries a person of opposite sex with aku. what phenotypes do you expect for their children? explain.
Answers
Phenotype alludes to a person's recognizable parts, for example, level, eye tone, and blood classification. An individual's not entirely set in stone by both their genomic cosmetics and ecological variables.
Nurturing is viewed as a Phenotype that can be impacted essentially and supported. Hereditary commitments to nurturing are conceptualized as proof of the genotype-climate relationship (GE).
A singular's all are qualities together are known as the genotype. The actual appearance that outcomes from the alleles (for instance, the genuine purple blossom) are known as the Phenotype. On the off chance that the two qualities are no different (for instance, ww or PP), this is called homozygous.
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montgomery tubercles are most prominent in the breasts of:
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Montgomery tubercles are most prominent in the breasts of pregnant and lactating women.
Montgomery tubercles, also known as Montgomery glands, are small raised bumps or glands present on the areola of the breasts. These tubercles are most prominent in the breasts of pregnant and lactating women.
During pregnancy, hormonal changes occur in a woman's body, including increased levels of estrogen and progesterone. These hormones stimulate the growth and development of Montgomery tubercles. The tubercles play an important role in lubricating and protecting the nipples during breastfeeding.
Montgomery tubercles secrete an oily substance called sebum, which helps keep the nipples moisturized and prevents them from drying out during breastfeeding. The sebum also has antibacterial properties that help protect the nipple and areola from infection.
The prominence of Montgomery tubercles varies among individuals and can be influenced by factors such as hormonal fluctuations, pregnancy, and breastfeeding. It is important to note that Montgomery tubercles can also be present in non-pregnant and non-lactating women, although they may be less pronounced.
In summary, Montgomery tubercles are most prominent in the breasts of pregnant and lactating women due to hormonal changes and their role in nipple lubrication and protection during breastfeeding.
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The following metabolic pathway involves the action of many enzymes within a cell.
Substrate 1 --> Substrate 2 --> Substrate 3 --> Product
Explain what would happen to the amount of product produced if the enzyme that acts on substrate 2 was not produced in the cell. All other enzymes at each step of the pathway are present.
Answers
Answer:
The metabolic pathway you described involves a series of chemical reactions that convert one substrate into the next substrate until the final product is formed. If the enzyme that acts on substrate 2 is not produced within the cell, the reaction that converts substrate 1 into substrate 2 would not occur. This would cause a block in the pathway, as substrate 2 would not be available for the enzyme that converts substrate 2 into substrate 3.
Explanation:
The metabolic pathway you described involves a series of chemical reactions that convert one substrate into the next substrate until the final product is formed. If the enzyme that acts on substrate 2 is not produced within the cell, the reaction that converts substrate 1 into substrate 2 would not occur. This would cause a block in the pathway, as substrate 2 would not be available for the enzyme that converts substrate 2 into substrate 3.
As a result, the amount of product produced would be severely decreased. Because of the missing enzyme, substrate 2 would not be converted into substrate 3, and subsequently, substrate 3 would not be converted into the final product. If this key enzyme is not present, the entire metabolic pathway would be halted at the step involving substrate 2, causing the cells to be unable to produce the final product and creating a bottleneck in the metabolic pathway.
It's important to remember that enzymes are catalysts, they speed up the reactions of the metabolic pathway and ensure the reactions occur at appropriate rates to support life, even a small change in the enzyme activity can affect the entire pathway and alter the final product quantity and quality.
explain why a transparent epidermis is an adaptation for photosynthesis
Answers
Answer: A leaf’s upper epidermis is generally transparent that allowing the light to enter the leaf.
What did Gregor Mendel use to discover the principles that rule heredity?
A. Pigeons
B. Pear Trees
C. Dogs
D. Pea Plants
Answers
Answer:
D. Pea Plants
Explanation:
Pick up line for chlorplast?
Answers
Are you a chloroplast? Because you chlorophyll my heart. <33
There's this one:
"are you a chloroplast? Because you chlorophyll my heart <3"
Which type of anemia is a patient most at risk for following a total gastrectomy?
Answers
Iron deficiency anemia became the major cause of the anemia after the gastrectomy, and the megaloblastic the anemia with the vitamin B12 the deficiency was rare. In this study, the anemia was relatively frequent after the gastrectomy for early gastric cancer. Anemia was also detected shortly after the surgery and can increased during the follow-up period.
Iron deficiency anemia is the common type of the anemia — a condition in which the blood lacks of adequate healthy red blood cells. Red blood cells that carry oxygen to the body's and tissues. As the name that implies, iron deficiency anemia is cause due to insufficient iron
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can someone please help me with the question at the bottom??
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In the absence of mutation, gene flow, random mating, and selection, the gene frequencies can be determined from the equation if the allele frequencies are known.
Only a theoretical method of determining gene frequency is used.
Therefore, another allele's frequency can be estimated if the frequency of one allele is known.
What is mutation?
Any modification to the DNA sequence of a cell. Mutations can occur as a result of environmental DNA-damaging agents being exposed to, or as a result of errors in cell division. Mutations could be harmful, helpful, or ineffectual. However, if mutations occur in the cells that make eggs or sperm, they may be passed on to offspring. Mutations that occur in other types of cells are not passed on to offspring. Specific mutations have been linked to cancer and other disorders. A mutation is also referred to as a variant.
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Which organism obtains its energy exclusively from dead or decaying matter?
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Answer:
Bacteria obtains energy from dead bodies of animals and plants.
Which hormone is the most important regulator of endometrium proliferation during the follicular phase
Answers
Answer:
Estrogen
Explanation:
The upregulation of FSH receptors within the follicle at the start of the cycle causes an increase in this hormone.
Use the diagram below to answer the next two questions.
#31: What does this diagram suggest about the relationship between fungi and animals, as compared with fungi and plants?
#32: Are green algae more closely related to red algae or plants? Explain your answer.
Analyzing Data
#33:What is the main design flaw in this experiment?
#34:Does the experimental design clearly indicate the question that the students were trying to answer? Explain.
Answers
The fungi are more closely related to animals than to plants.
Fungi and animals don’t have chloroplasts. This means that neither fungus nor animal can do photosynthesis. Chlorophyll turns plants green and feeds plants. Fungi, on the other hand, absorb nutrients from decaying plant material via an enzyme process. Animals eat their food.
Red alga and green algae belong to the superfamily Archaeoplastida. Green algae is the closest living relative of land plants and red algae is the nearest living relative of green algae. Red, Algae, Green Algae, and Land Plants form a clade or monophyletic group. Brown Algae and Golden Algae are not related to this group.
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name three large molecules that make up the bulk of the food humans eat,and identify the products of each one that result from digestion.
Answers
Answer: Proteins are broken down into amino acids, lipids are broken down into fatty acids, and carbohydrates are broken down into simple sugars.
Explanation:
A recipe for a cake calls for both liquid and dry ingredients. If you are following the recipe, how will the order in which you add the ingredients affect the mass of the batter?(1 point) It will have no effect because the order in which ingredients are mixed will not change the fact that matter cannot be created nor destroyed. It will have no effect because the order in which ingredients are mixed will not change the fact that matter cannot be created nor destroyed. If you add the liquid ingredients first, the final result will have less mass than if you added the dry ingredients first. This is because the dry ingredients will dissolve in the liquid ingredients. If you add the liquid ingredients first, the final result will have less mass than if you added the dry ingredients first. This is because the dry ingredients will dissolve in the liquid ingredients. If you add the dry ingredients first, the final result will have less mass than if you added the liquid ingredients first. This is because the dry ingredients will be dissolved by the liquid ingredients. If you add the dry ingredients first, the final result will have less mass than if you added the liquid ingredients first. This is because the dry ingredients will be dissolved by the liquid ingredients. It will have no effect because the order in which ingredients are mixed will not change the fact that the mass of the batter will be greater than the masses of the ingredients. It will have no effect because the order in which ingredients are mixed will not change the fact that the mass of the batter will be greater than the masses of the ingredients.
Answers
It will have no effect because the order in which ingredients are mixed will not change the fact that matter cannot be created nor destroyed.
Effect occurs on massThe order in which we add the ingredients do not affect the mass of the batter because the order in which ingredients are mixed will not change the fact that matter cannot be created nor destroyed.
The mass of the batter remains the same due to the incorporation of same quantity of ingredients so we can conclude that option A is the right answer for this question.
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Answer:It will have no effect because the order in which ingredients are mixed will not change the fact that matter cannot be created nor destroyed.
Effect occurs on mass
The order in which we add the ingredients do not affect the mass of the batter because the order in which ingredients are mixed will not change the fact that matter cannot be created nor destroyed.
The mass of the batter remains the same due to the incorporation of same quantity of ingredients so we can conclude that option A is the right answer for this question.
Explanation: 100% mark brainlist
An object displaces 7.1 ml of water. If the mass of the
object is 4 grams, what is the density?
Answers
Answer: D = 0.56 g/ml
Explanation:
We can use the density equation for this one.
D = m / v
We are given Mass (m) and Volume (v).
D = 4g / 7.1 ml
D = 0.56 g/ml
What type of planet is Jupiter and Saturn?
Answers
Answer:
Both Jupiter and Saturn are Gas Giants.
Explanation:
Hope it helps:)
Jupiter and Saturn are both classified as gas giants. Gas giants are a type of planet that primarily consists of hydrogen and helium gases.
Jupiter and Saturn are much larger in size compared to terrestrial planets like Earth and have thick atmospheres with no solid surfaces.
Jupiter, the largest planet in our solar system, is known for its characteristic striped cloud bands and its iconic Great Red Spot, which is a massive storm.
Saturn, the sixth planet from the Sun, is famous for its distinctive ring system.
These gas giants have a relatively small solid core surrounded by thick layers of gas, mainly hydrogen and helium.
The gas giants also have numerous moons, with Jupiter having at least 79 known moons and Saturn having more than 80.
Thus, Jupiter and Saturn are gas giants.
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What type of membrane lines cavities that open to the outside of the body?.
Answers
Answer:
Mucous membranes
Explanation:
Which stages begin and end the human menstrual cycle?
A) ovulation, menstruation
B) puberty, ovulation
C) menstruation, ovulation
D) fertilization, menstruation
15 Points shall go to the person who answers this correctly
Answers
A) ovulation, menstruation is the stages begin and end the human menstrual cycle
The human menstrual cycle is a monthly reproductive cycle that prepares the female body for potential pregnancy. It involves several stages, but the two main events that mark the beginning and end of the cycle are ovulation and menstruation.
Ovulation is the process in which a mature egg is released from the ovary. It usually occurs around the middle of the menstrual cycle, approximately 14 days before the start of the next menstrual period. During ovulation, the egg is released into the fallopian tube, where it can be fertilized by sperm if conception occurs.
Following ovulation, if fertilization does not take place, the second stage of the cycle begins, which is menstruation. Menstruation is the shedding of the uterine lining that has built up in preparation for pregnancy. It typically lasts for a few days to a week and is characterized by the flow of blood and tissue from the uterus through the vagina.
So, the stages that begin and end the human menstrual cycle are ovulation, marking the release of the egg, and menstruation, marking the shedding of the uterine lining. Therefore, Option A is correct.
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What steps are involved when a planarian needs to generate new cells
Answers
Answer:
Using this technique, which they termed 'chemical amputation', the team induced lesions in planaria and investigated which genes were activated over the course of the regeneration process. The pharynx lacks neoblasts, but cells near the wound quickly start dividing and regenerate the amputated organ.
The steps which are involved when a planarian needs to generate new cells include the different stages of regeneration.
What is Regeneration?Regeneration in the planarians depends on the presence of stem cells called as neoblasts. These newly formed cells are distributed throughout the body and, when part of the worm has been amputated, these parts are activated to reform the tissues which have been removed.
Planarians also use this extraordinary regenerative ability to reproduce asexually. Through the process of transverse fissions, planarians which anchor their tails and also essentially pull themselves apart from each other, resulting in two fragments which include one head and one tail that will regenerate into two genetically identical worms.
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A scientist is evaluating the effectiveness of two new medicated ointments for skin rashes (brand x and brand y). as a first step, the study tested the ointments on 21 patients with a chronic skin rash. which scenario will tell the scientist more about the ointments? a give 30 patients brand x and 30 patients brand y, then after one week switch the
medications for each group. b give the 60 patients one brand, observe the results, and then give them the other brand
and observe the results. c give 30 patients brand x and 30 patients brand y. d give 20 patients brand x, 20 patients brand y, and 20 patients a cream containing no
medication.
Answers
When evaluating the effectiveness of two new medicated ointments for skin rashes, it is important to design a study that will provide accurate and reliable results. In this case, the study tested the ointments on 21 patients with a chronic skin rash as a first step.
Option D is correct
Option A suggests giving 30 patients brand x and 30 patients brand y, then after one week switching the medications for each group. This approach, known as a crossover design, is a popular method for clinical trials. It helps to eliminate any potential biases that may arise due to individual variability by using the same group of patients for both treatments. However, it may not provide the most reliable results because the patient's response to the second treatment may be influenced by their response to the first treatment. Moreover, it may not be practical to switch the medication every week for a longer duration of the study.
Option B suggests giving the 60 patients one brand, observing the results, and then giving them the other brand and observing the results. This approach, known as a parallel design, is also a popular method for clinical trials. It involves randomly assigning patients to one of the two groups (brand x or brand y) and observing the results. This method is more reliable than a crossover design because patients are randomly assigned to one group and the effects of the first treatment do not influence the second treatment. However, this method takes longer to complete because patients have to be observed for a longer duration of the study.
Option C suggests giving 30 patients brand x and 30 patients brand y. This approach is similar to option B but with a smaller sample size. This method can be reliable if the sample size is adequate, and patients are randomly assigned to one group. However, it may not be practical for a longer duration of the study.
Option D suggests giving 20 patients brand x, 20 patients brand y, and 20 patients a cream containing no medication. This approach is known as a placebo-controlled design. It involves randomly assigning patients to one of three groups (brand x, brand y, or placebo) and observing the results. This method is the most reliable because it eliminates any potential biases that may arise due to individual variability or a placebo effect. However, this method may not be ethical if patients are suffering from a chronic skin rash and need medication.
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Osteoporosis is most common in elderly women because of the lack of ___________, which would otherwise inhibit ____________. estrogen; osteoclast activity osteoblasts; osteoclast activity parathyroid hormone; osteocyte activity exercise; osteoblast activity dietary calcium; estrogen production
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Why cant one antibody mark all the virus?
Answers
Answer:
Because the antibody does not have all the properties of that
because the antibodys will gather to all of the virus that it can but it won't cover everything
What might happen if the nerves in your skin did not gather information?
Answers
Answer:
Explanation: If your nerves in your skin don't gather information then you couldn't feel anything or comprehend what you're touching. So its basically like having CIPA which does not allow you to feel pain as pain receptors are also nerves.
If you have 2 moles of iron chloride (FeCl3) and dissolve it in water to a final volume of 1L of water, what is
the molarity and osmolarity of the solution?
Answers
Answer:
D
Explanation:
The appropriate answer will be "Molarity of 2 mol/L and osmolarity of 8 osmol/L".
The given values are:
Number of moles,
= 2 moles
Volume of solution,
= 1 L
Now,
→ The molarity of solution will be:
= \(\frac{Number \ of \ moles}{Volume \ of \ solution}\)
= \(\frac{2}{1}\)
= \(2 \ mol/L\)
and,
→ The osmolarity of the solution will be:
= \(Molarity\times n\)
According to the question \(feCl_3=1fe+3Cl\), then n = 4.
= \(2\times 4\)
= \(8 \ osmol/L\)
Thus the above answer is correct.
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Please can someone help me?
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Mutations in DNA molecules can occur when a change occurs in DNA nucleotide bases.
What do you mean by mutations?Mutations is any change in the DNA sequence of a cell. Mutations may be caused by mistakes during cell division, or they may be caused by exposure to DNA-damaging agents in the environment. Mutations can be harmful, beneficial, or have no effect.
Mutations can result from errors in DNA replication during cell division, exposure to mutagens or a viral infection. Germline mutations (that occur in eggs and sperm) can be passed on to offspring, while somatic mutations (that occur in body cells) are not passed on.
These hereditary (or inherited) mutations are in almost every cell of the person's body throughout their life. Hereditary mutations include cystic fibrosis, hemophilia, and sickle cell disease.
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Glycolysis requires an input of energy. What molecule provides this energy?
Answers
Answer:
Glycolysis is actually a series of ten chemical reactions that requires the input of two ATP molecules. This input is used to generate four new ATP molecules, which means that glycolysis results in a net gain of two ATPs.
Explanation:
hope it helps
Where do you think a plant might get its energy during fall and winter
Answers
Answer:
Each plant is transformed differently in the fall intimately dormancy is the way plants conserve energy by using the stored sugers and carbohydrates they produce during the growing season to survive the winter.
although it can progress unnoticed for many years, hypertension wreaks havoc on the human body, so adults should have their blood pressure screened periodically. click to select the health conditions that may arise as a result of uncontrolled hypertension.
Answers
The health conditions that may arise as a result of uncontrolled hypertension are heart attacks, strokes, eyesight loss, and kidney damage.
What is blood pressure and resistant hypertension?Blood pushing against artery walls creates blood pressure. Each time the heart beats, the force is produced as the blood is pumped from the heart into the blood arteries. Blood pressure is also influenced by the artery walls' size, tone, and elasticity. By controlling the body's fluid and salt levels, the kidneys also control blood pressure.
Blood pressure that is resistant to aggressive medical therapy is high blood pressure. When each of the following statements is accurate, hypertension is said to be resistant.
Three distinct blood pressure drugs are being taken by someone at their highest tolerated dosages.A diuretic is one of the blood pressure treatments (removes fluid and salt from the body).Blood pressure Blood pressure that is resistant to aggressive medical therapy is high blood pressure.The risk of heart attack, stroke, and renal failure are all significantly increased by resistant hypertension. For months or years, resistant hypertension may go undetected, but when it does, it can lead to heart attacks, strokes, eyesight loss, and kidney damage. Some people have pseudo-resistant (seemingly resistant) hypertension, which is brought on by additional causes like taking medications that interact negatively with one another or having high blood pressure only when visiting a doctor. The diagnosis and treatment of pseudo-resistant hypertension are crucial.
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Does translation occur when the codons in the mRNA are “read”?
Answers
Answer:
During translation, an mRNA sequence is read using the genetic code, which is a set of rules that defines how an mRNA sequence is to be translated into the 20-letter code of amino acids, which are the building blocks of proteins.