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Zinaida [17]
3 years ago
9

This experiment is an example of hypothesis-based science. What question did the researchers ask? What question did the research

ers ask? Do male guppies in pools with pike-cichlid fish have brighter color patterns than females in the pool? Do female guppies prefer to mate with males with bright color patterns or drab colors? Can predation result in selection for color patterns in guppies? Do killifish prefer to prey on juvenile guppies or adult guppies?
Biology
1 answer:
Kamila [148]3 years ago
7 0

Answer:

Can predation result in selection for color patterns in guppies?

Explanation:

Researchers took guppies from their pools that is seen to have pike­cichlid fish (a huge guppy predators) and then implanted it in another pools that is seen to have the killifish (they are not really active predators that prey wholly on the childish and immature guppies). They then estimated to see if the color patterns in the grafted or transferred population undergo some alterations in the course of time.

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Choose the correct answer. Once you know that all mammals have backbones, you also know that every mammal is ___________.
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Which is the primary function of the carbon cycle
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Primary function of the carbon cycle is to "recycle carbon throughout the biosphere, which includes the atmosphere" Hope this is what you needed!

8 0
3 years ago
choose five body systems that are involved in maintaining homeostasis in your body as you answer these assessment questions. Exp
gayaneshka [121]

Answer:

Explanation:

Water Levels

For example, the cardiovascular, urinary, and lymphatic systems all help the body control water balance. The cardiovascular and lymphatic systems transport fluids throughout the body and help sense both solute and water levels and regulate pressure. If the water level gets too high, the urinary system produces more dilute urine (urine with a higher water content) to help eliminate the excess water. If the water level gets too low, more concentrated urine is produced so that water is conserved.

Internal Temperatures

Similarly, the cardiovascular, integumentary (skin and associated structures), respiratory, and muscular systems work together to help the body maintain a stable internal temperature. If body temperature rises, blood vessels in the skin dilate, allowing more blood to flow near the skin’s surface. This allows heat to dissipate through the skin and into the surrounding air. The skin may also produce sweat if the body gets too hot; when the sweat evaporates, it helps to cool the body. Rapid breathing can also help the body eliminate excess heat. Together, these responses to increased body temperature explain why you sweat, pant, and become red in the face when you exercise hard. (Heavy breathing during exercise is also one way the body gets more oxygen to your muscles, and gets rid of the extra carbon dioxide produced by the muscles.)

Conversely, if your body is too cold, blood vessels in the skin contract, and blood flow to the extremities (arms and legs) slows. Muscles contract and relax rapidly, which generates heat to keep you warm. The hair on your skin rises, trapping more air, which is a good insulator, near your skin. These responses to decreased body temperature explain why you shiver, get “goose bumps,” and have cold, pale extremities when you are cold.

Homeostasis of Ions

Body functions such as regulation of the heartbeat, contraction of muscles, activation of enzymes, and cellular communication require tightly regulated calcium levels. Normally, we get a lot of calcium from our diet. The small intestine absorbs calcium from digested food.

The endocrine system is the control center for regulating blood calcium homeostasis. The parathyroid and thyroid glands contain receptors that respond to levels of calcium in the blood. In this feedback system, blood calcium level is the variable, because it changes in response to the environment. Changes in blood calcium level have the following effects:

When blood calcium is low, the parathyroid gland secretes parathyroid hormone. This hormone causes effector organs (the kidneys and bones) to respond to increase calcium levels. The kidneys prevent calcium from being excreted in the urine. Osteoclasts in bones reabsorb bone tissue and release calcium.

When blood calcium levels are high, the thyroid gland releases calcitonin. Calcitonin causes the kidneys to reabsorb less calcium from the filtrate, allowing excess calcium to be removed from the body in urine. Calcitonin also suppresses the formation of active vitamin D in the kidneys; without vitamin D the small intestines don’t absorb as much dietary calcium. Osteoblasts, stimulated by calcitonin, use calcium in the blood to add to bone tissue.

4 0
2 years ago
1) What is the function of a protein? A) provides a quick supply of energy, main source of energy B) dissolves and carries nutri
Wewaii [24]

Answer:

C.) builds new tissues antibodies, enzymes, hormones, and other compounds: repairs damage

I hope I helped! ^-^

4 0
2 years ago
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