Seed plants are divided into two groups. What are they? vascular and nonvascular brown seeds and green seeds nonflowering and flowering fruits and vegetables.

Sewage and stormwater discharge are the two ways E.coli is introduced into the rivers.

Briefly explain how municipalities can solve the E.coli problem.

Chlorine, ultraviolet radiation, or ozone can all be used to treat water to kill or inactivate E.coli, especially when the water comes from a private source like a well. It is necessary to disinfect systems that use surface water sources to remove all bacterial contamination.

Our rivers can get contaminated with E.coli through a variety of sources and entry points, including sewage and stormwater discharges or runoff from urban and agricultural areas, seepage from malfunctioning septic tanks, and direct deposition by livestock and wild animals.

Hence, E.coli is introduced into rivers by sewage and stormwater discharge.

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The correct option is D; Tumor suppressor genes and proto-oncogenes. Oncogenes and tumor suppressor genes are two types of genes that relate cell cycle regulation to tumor genesis and development.

In their proto-oncogene state, oncogenes propel the cell cycle forward, allowing cells to progress from one cell cycle stage to the next. Hundreds of genes carefully govern the process of cell division in normal cells. Proper growth necessitates a balance between the activity of genes that stimulate and repress cell proliferation. It also depends on the actions of genes that indicate when damaged cells should die. p53 is a multifunctional protein that has a significant influence on a cell's commitment to division since it activates when there is damaged DNA in cells during the G1 phase.

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Answer:

I'm not 100% sure but I think it's sunflower

a pathogen Legionella bacteria are found naturally in the environment and have an affinity for warm water locations like cooling towers and ornamental fountains.

Legionella bacteria grow in building water systems.

Water that contains Legionella bacteria can spread into small droplets that people can inhale.

When a human being inhales water that contains legionella bacteria they can be infected by a disease called Legionnaires' disease.

Legionarraeris' disease is also called Pontiac fever.

Pontiac fever causes a human being to have signs like

The disease is tested through a urine test.

This disease is commonly treated by taking a lot of fluids, taking pain relievers, and muscle relaxants.

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Among the given options, statement b. "The gametes are the haploid phase of the animal's life cycle" is true.

In the life cycle of animals, the gametes (sperm and egg cells) are the reproductive cells involved in sexual reproduction. Gametes are produced through a specialized cell division called meiosis, which reduces the chromosome number by half, resulting in haploid cells.

During sexual reproduction, haploid gametes from two parents combine to form a diploid zygote, which then develops into an organism. The zygote undergoes mitotic cell divisions, growing into a multicellular organism, and the diploid phase of the life cycle begins.

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The expected habitat of a fish that possesses the ability to produce copious amounts of urine and the ability to move ions via active transport across the gills would be c. Fresh water.

Freshwater fish must produce a significant amount of urine to maintain their internal salt levels as the salt concentration in their external environment is lower than in their internal environment.

This excess urine production helps them excrete excess water and retain the necessary salts for survival. An important adaptation for freshwater fish is the ability to transport ions actively across their gills. This ability allows them to take up salts actively from the water and maintain their internal salt levels.

If freshwater fish were unable to transport ions actively across their gills, they would be unable to regulate their internal salt levels effectively and would be at risk of dying.

In summary, the ability to produce large amounts of urine and actively transport ions across their gills are essential adaptations for freshwater fish to regulate their internal salt levels effectively and survive in their environment.
Therefore, the expected habitat of a fish with these traits would be fresh water.

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Phototropism occurs when a plant bends or grows in a specific direction in reaction to light. Shoots tend to migrate toward the light, while roots tend to grow away from it.

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Answer:

C...................

Answer:

I thought b since they work together not unrelated function

Answer:

contains membrane-bound organelles

Explanation:

Prokaryotes lack a nucleus, and eukarya have a true nucleus. They can be distinguished by the presence of the membrane-bound organelles.

Bacteria are prokaryotic species that lack a true nucleus and organelles. Their cell component is dispersed in the cytoplasm and the genetic material is dispersed without any membrane.

The eukaryotes are the cells that have proper organelles and have a nuclear membrane that encloses the nucleus. The genetic material is contained in the nuclear membrane.

Therefore, option B. membrane-bound organelles differentiate the bacteria and eukarya.

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Oxygen unloading always take place at the tissues. This type of process will always decrease the oxygen which is at partial pressure of blood and which is leaving this region.

The Oxygen in the lungs branch into smaller bronchi and bronchioles, which are even smaller tubes. The actual exchange of oxygen and carbon dioxide occurs in the small air sacs at the end of bronchioles, known as alveoli. Alveolar air has a partial pressure of around 104 mm Hg of oxygen, whereas pulmonary veins have a partial pressure of about 100 mm Hg of oxygenated blood.

A decrease in pH (increase in acidity) causes an increase in O2 unloading. Increasing peripheral tissue metabolism, including changes in pH, CO2, and temperature, causes the Oxygen-Hemoglobin dissociation curve to move to the right. This decreases hemoglobin's affinity for oxygen and enhances oxygen unloading.

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Answer:

one parent is heterozygous and the other parent is homozygous recessive

Explanation:

Since red eyes are the dominant trait, both parents must carry the recessive gene for white eyes in order to have offspring with white eyes. However, if both parents were only heterozygous (one gene for each eye color), then the ratio of offspring with red eyes to white would be 3:1. There are more offspring with white eyes than red eyes present, so on parent must be homozygous recessive (have both genes for white eyes).

Eukaryotic cells have a nucleus, while prokaryotes have DNA that floats around inside the cell.

Eukaryotic cells contain membrane aound cell organelles, such as the nucleus, while on the other hand, prokaryotic cells do not have membrane around nucleus. Eukaryotes have mitochondria and chloroplasts, the cell wall, and the structure of chromosomal DNA whereas prokaryote have no organelles.

So we can conclude that Eukaryotic cells have a nucleus, while prokaryotes have DNA that floats around inside the cell.

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Answer:

Eukaryotic cells have a nucleus, while prokaryotes have DNA that floats around inside the cell.

Explanation:

Did it on my test

Answer:

Abrasion

Explanation:

Children who showed the greatest amount of reactivity (in terms of blood pressure increase) when placing their hands in ice water were more likely to develop higher blood pressure or hypertension later in life. This is because increased reactivity may indicate a more sensitive or heightened response to stress.

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1.1. Graph to illustrate the market for tomatoes before the unusually cold January and in the same graph show how the events in the news clip influence the market for tomatoes

Here, the price is $6.50 and the quantity supplied is 5 million pounds per week. The equilibrium is at the intersection of the supply and demand curve at point E.

Now, the events of the news clip influence the market for tomatoes, causing a decrease in supply due to the destruction of entire fields of tomatoes, resulting in a shift of the supply curve from S1 to S2.

The new equilibrium is at point F where the price has increased to $30 and the quantity demanded and supplied have decreased to 1.25 million pounds per week.

1.2. In April 2014, the money price of a carton of milk was $2.01 and the money price of a gallon of gasoline was $3.63.

To calculate the relative price of a gallon of gasoline in terms of milk, we use the formula:

Relative price = Price of gasoline / Price of milk

Relative price = $3.63 / $2.01 = 1.81

Therefore, the relative price of a gallon of gasoline in terms of milk is 1.81.

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People born with high genetic risk for schizophrenia were A. less likely to develop schizophrenia if they were raised in healthy family environment than if they were raised in disturbed family environment.

Schizophrenia is a mental disorder where people interpret reality very abnormally. Schizophrenia can result in combination of hallucinations, delusions, and extremely disordered thinking and behavior that impairs daily functioning and people with schizophrenia require lifelong treatment.

The exact cause of schizophrenia is not known but combination of genetics, environment, and altered brain chemistry and structure may have a role. Schizophrenia is characterized by thoughts that seem out of touch with reality, disorganized speech or behavior.

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Answer: D. Keratin

Explanation: Keratinocytes (pronounced: ker-uh-TIH-no-sites) make keratin, a type of protein that's a basic component of hair, skin, and nails. Keratin in the skin's outer layer helps create a protective barrier.

Answer:

Hippos can hold their breath for five minutes

Answer:

the answer is D..........

(a) What is the probability a male's growth plates fuse after age 20?The given mean is μ = 19.1 and the standard deviation is σ = 16/12 years. The value we want to find is P(X > 20), that is the probability that the male's growth plates fuse after age 20.Using the Z-score formula, we have:

(b) What is the probability a male's growth plates fuse before age 17?We want to find P(X < 17), that is the probability that the male's growth plates fuse before age 17.Using the Z-score formula, we have:

(c) What proportion of male growth plates fuse between 16 and 17 years of age?To find the proportion of male growth plates that fuse between 16 and 17 years of age, we need to find P(16 < X < 17), which is the area under the standard normal distribution curve between z = -0.5625 and z = -1.3125, respectively.Using the standard normal table, we have:

(d) Would it be unusual for a male's growth plates to fuse when he is 21 years old or older? Explain.We want to find the probability that a male's growth plates fuse when he is 21 years old or older, that is P(X ≥ 21).Using the Z-score formula, we have:

Since the standard deviation is relatively large, it means that the distribution is more spread out and the event is not as rare as it would be for a smaller standard deviation. Nonetheless, an event with a probability of 0.1190 is still relatively unlikely.

Growth plates or commonly called growth plates are cartilaginous tissues found at the ends of long bones in children. Injuries to this area are often the main cause of growth disorders such as leg length discrepancies and angulation deformities in children. Growth plates are present in almost all bones, especially long bones such as the femur or arm bones.

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The phenotypic ratio of purple-flowered to white-flowered offspring will be 3:1. Hence 75% offsprings will be purple.

Genetics is the study of the genes, the genetic variation, and the heredity in the organisms. It is an important topic in biology because heredity is fundamental to organism evolution. In the nineteenth century, Gregor Mendel, a Moravian Augustinian monk working in Brno, was the first to do scientific study on genetics.

The study of genetics focuses on the effects of individual genes or groups of genes in health and disease. Understanding genetic variations and anomalies is critical for learning more about health promotion and disease prevention. In genetics, the phenotype is the set of observable traits or attributes of an organism. The term refers to the anatomy, developmental processes, biochemical and physiological characteristics, behaviour, and behavioural results of an organism.

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Answer:

Remove the shirt, and rinse the skin with water

Explanation:

I just  got the right answer

For a skin contact with HCl, Immediately flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes.

Hydrochloric acid (HCl) is a very corrosive acid, and can be harmful to the skin after a contact.

The following are what should be done after a skin contact with HCl;

Thus, for a skin contact with HCl, Immediately flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes.

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Answer: UHHHH THE ELVES BLOOD CELLS

Explanation:

Answer:

B. Carbon dioxide

Explanation:

First of all, let’s write out the photosynthesis equation to identify the products and reactants.

6CO2 + 6H2O + energy —> C6H12O6 + 6H2O

In a chemical equation with the arrow pointing right, the reactants are on the left and the products on the right.

In photosynthesis, the reactants, carbon dioxide, water, and energy, react to form the products of glucose (sugar) and oxygen.

Now, let’s look at the answer choices. We can automatically eliminate choices A (oxygen) and D (sugar) because they are products.

We are left with B (carbon dioxide) and C (water). Water isn’t really considered a major contributor to climate change. Carbon dioxide is a greenhouse gas that traps heat in the atmosphere, causing climate change.

Therefore, the best answer choice is B. Carbon dioxide

Answer:

Explanation:

This is because the sieve plate interconnected like that help in exchange of substances or transport of substances between element cell and it act as a barrier to prevent the sap from been loss when phloem is damaged or cut. The sieve plates form the sieve tube which is the conducting element of the phloem. It is formed from series of elongated cells that are interconnected by perforations in their walls.

Self-splicing RNAs work because C. can create an enzyme-like effect if folded properly

Self-splicing RNAs are ribonucleic acids that are capable of catalyzing the removal of their introns. RNA splicing is a cellular process in which a precursor messenger RNA molecule (pre-mRNA) is transformed into a mature messenger RNA molecule. Some RNAs, on the other hand, are capable of removing themselves from the pre-mRNA sequence. These RNAs are referred to as self-splicing RNAs.

These ribozymes, or RNA enzymes, work in the same way as conventional protein enzymes because they have catalytic activity that helps them splice themselves out of the RNA molecule. The double-stranded RNA structure of these RNAs can create an enzyme-like effect if folded properly. This folding helps in the formation of an active site, which makes it possible for the RNA to catalyze the splicing reaction and generate the spliced RNA product. So therefore the correct answer is C. can create an enzyme-like effect if folded properly.

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