Biology : asked on katie6097
 17.02.2023

describe how ice would form in a pond in the winter if water were nonpolar

. 4

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Chemistry
Step-by-step answer
P Answered by PhD

Answer and explanation:

1. The stimulus that males respond to when the female is "in heat" is a chemical stimulus (option c).

In the case of mating, many animals receive a chemical signal - called a pheromone - which indicates the optimal time for reproduction.

Pheromones are chemical substances produced by living beings that induce specific behavior in individuals of their same species, as happens with ants that produce the chemical signal that warns other hormihgas of the presence of food.

Females "in heat" are capable of producing and releasing this hormone, which the male picks up by his smell and is attracted to mate.

2. The reason why animals depend on different stimuli to mate when they are far and near the equator is that the the length of the day at the equator does not vary much (option c).

In countries far from the equator, with a temperate climate, there are seasons, in which variations in lighting or day and night vary, which is not the case near the equator.

When mating cycles depend on the presence or absence of daylight, it is logical to think that the mating of animals far from the equator will be different from those in a tropical climate, which represents a difference in the stimulus that determines mating.

3. The correct order in which these steps occur is 3,2,4,1 (option b). The correct sequence, then, is:

A loud noise moves the bones inside the ears. Your ears send a signal along the nerves to your brain The brain sends a signal along the nerves to the muscles. You flinch.

An intense sound stimulus, when produced, is captured by the hearing system, which makes the little bones of the middle ear vibrate, converting them into sound vibrations that the auditory nerve converts into nerve signals.

The nerve impulse travels by afferent route to the central nervous system, where the brain receives and relates it, and sends an efferent response that reaches the muscles and makes the individual flinch.

4. In the case of the peacock, and according to natural selection, the visual stimulus that leads to the mating of the peahen is a sign of good mating due to males with bright tails will draw predators away from the chicks (option a).

The real reason why Peahens choose male peacocks with a more colorful tail to mate is still controversial. However, it is a fact that the ocelli present in the peacock's tail help to keep predators away, which is a valid reason to justify sexual selection in this case.

The showiness of the tail in males of this species is also a sign of good genes and reproductive success.

5. With respect to blue whales, the reason that best explains why the calves are born in winter is that calves would die of cold in the polar waters where the whales spend the summer (option c).

Normally, blue whales tend to migrate during the winter to warmer waters with the intention of mating and having their calves.

The reason why birth occurs in winter is that the calves -despite their large size- have very little fat to protect them from the cold, so they are very sensitive to low temperatures.

The calves must remain around 6 to 7 months in a warm climate before migrating, time that they take advantage in being suckled, they reach their maturity and acquire a thicker layer of fat.

6. By relating the taste of ice cream to how nice it is to eat it, your brain stored the information that you liked the ice cream as a memory.

The human brain has the ability to store pleasant experiences, such as the taste of certain foods, because of the emotion they produce.

One of the functions of the brain is memory, a superior neurological function that allows it to relate different stimuli to the reactions they produce and to store them as a reminder, just as with the pleasant memory of the taste of ice cream.

Chemistry
Step-by-step answer
P Answered by PhD

Answer and explanation:

1. The stimulus that males respond to when the female is "in heat" is a chemical stimulus (option c).

In the case of mating, many animals receive a chemical signal - called a pheromone - which indicates the optimal time for reproduction.

Pheromones are chemical substances produced by living beings that induce specific behavior in individuals of their same species, as happens with ants that produce the chemical signal that warns other hormihgas of the presence of food.

Females "in heat" are capable of producing and releasing this hormone, which the male picks up by his smell and is attracted to mate.

2. The reason why animals depend on different stimuli to mate when they are far and near the equator is that the the length of the day at the equator does not vary much (option c).

In countries far from the equator, with a temperate climate, there are seasons, in which variations in lighting or day and night vary, which is not the case near the equator.

When mating cycles depend on the presence or absence of daylight, it is logical to think that the mating of animals far from the equator will be different from those in a tropical climate, which represents a difference in the stimulus that determines mating.

3. The correct order in which these steps occur is 3,2,4,1 (option b). The correct sequence, then, is:

A loud noise moves the bones inside the ears. Your ears send a signal along the nerves to your brain The brain sends a signal along the nerves to the muscles. You flinch.

An intense sound stimulus, when produced, is captured by the hearing system, which makes the little bones of the middle ear vibrate, converting them into sound vibrations that the auditory nerve converts into nerve signals.

The nerve impulse travels by afferent route to the central nervous system, where the brain receives and relates it, and sends an efferent response that reaches the muscles and makes the individual flinch.

4. In the case of the peacock, and according to natural selection, the visual stimulus that leads to the mating of the peahen is a sign of good mating due to males with bright tails will draw predators away from the chicks (option a).

The real reason why Peahens choose male peacocks with a more colorful tail to mate is still controversial. However, it is a fact that the ocelli present in the peacock's tail help to keep predators away, which is a valid reason to justify sexual selection in this case.

The showiness of the tail in males of this species is also a sign of good genes and reproductive success.

5. With respect to blue whales, the reason that best explains why the calves are born in winter is that calves would die of cold in the polar waters where the whales spend the summer (option c).

Normally, blue whales tend to migrate during the winter to warmer waters with the intention of mating and having their calves.

The reason why birth occurs in winter is that the calves -despite their large size- have very little fat to protect them from the cold, so they are very sensitive to low temperatures.

The calves must remain around 6 to 7 months in a warm climate before migrating, time that they take advantage in being suckled, they reach their maturity and acquire a thicker layer of fat.

6. By relating the taste of ice cream to how nice it is to eat it, your brain stored the information that you liked the ice cream as a memory.

The human brain has the ability to store pleasant experiences, such as the taste of certain foods, because of the emotion they produce.

One of the functions of the brain is memory, a superior neurological function that allows it to relate different stimuli to the reactions they produce and to store them as a reminder, just as with the pleasant memory of the taste of ice cream.

Biology
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P Answered by PhD

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Biology
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P Answered by PhD

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Biology
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Biology
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 Explanation: Osmosis is a process when there is movement of water from the region of comparatively higher concentration to the region of lower concentration across in a permeable membrane.

Example with explaination :

when soaked in dilute sodium chloride solution onion gain mass because of the process of osmosis.&nb
Biology
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Biology
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P Answered by PhD

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