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KIM [24]
2 years ago
14

Describe how hibernation has helped bear species to survive.

Biology
2 answers:
Ierofanga [76]2 years ago
6 0
Hibernation helps animals survive the changing seasons. Foods that bears eat, such as berries and flowers, are much less available during cold winter months. When they hibernate, bears enter a deep sleep. ... While they sleep, the bears can survive because their bodies live off of their stored fat or food.

During hibernation, the animal’s body temperature, heart rate and breathing rate all drop to significantly lower levels. Animals do this to survive the winter because the weather is cold and food is scarce. It is advantageous because these animals can quite literally shut themselves off for weeks at a time rather than try and survive through harsh weather conditions.

While many people think bears are hibernators, they actually participate in a similar, though not exact, practice. Instead of hibernating, bears fall into a deep sleep called torpor. During torpor, heart rate and breathing rate decreases, body temperature reduces slightly and bears do not eat or release bodily waste. Bears can sleep more than 100 days without eating, drinking, or passing waste!

Bears sleep in dens that they make themselves, as well as in hollow trees, caves and dens built by other bears. A den can be built in 3–7 days, however, the timing of den building varies from bear to bear. While some bears build their dens months before hibernation season, others choose to excavate their dens.

These animals can dramatically drop their body temperature to below freezing—salty body fluids work to prevent tissue crystallization in particularly cold temperatures.

So really, animals that are true hibernators don’t actually sleep through the entire winter.

The urea produced by their fat metabolism is broken down and the nitrogen is re-used by the bear to rebuild protein.
Alex787 [66]2 years ago
4 0

Answer:

Hibernation helps animals survive the changing seasons. Foods that bears eat, such as berries and flowers, are much less available during cold winter months. When they hibernate, bears enter a deep sleep. ... While they sleep, the bears can survive because their bodies live off of their stored fat or food.

During hibernation, the animal’s body temperature, heart rate and breathing rate all drop to significantly lower levels. Animals do this to survive the winter because the weather is cold and food is scarce. It is advantageous because these animals can quite literally shut themselves off for weeks at a time rather than try and survive through harsh weather conditions.

While many people think bears are hibernators, they actually participate in a similar, though not exact, practice. Instead of hibernating, bears fall into a deep sleep called torpor. During torpor, heart rate and breathing rate decreases, body temperature reduces slightly and bears do not eat or release bodily waste. Bears can sleep more than 100 days without eating, drinking, or passing waste!

Bears sleep in dens that they make themselves, as well as in hollow trees, caves and dens built by other bears. A den can be built in 3–7 days, however, the timing of den building varies from bear to bear. While some bears build their dens months before hibernation season, others choose to excavate their dens.

These animals can dramatically drop their body temperature to below freezing—salty body fluids work to prevent tissue crystallization in particularly cold temperatures.

So really, animals that are true hibernators don’t actually sleep through the entire winter.

The urea produced by their fat metabolism is broken down and the nitrogen is re-used by the bear to rebuild protein.

Explanation:

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Countercurrent multiplication involves A) ions leaving ascending limb to make water come out of the descending limb B) water lea
Snowcat [4.5K]

Answer:

The correct option is A

Countercurrent multiplication is the process whereby energy is used to generate an osmotic gradient in which water is reabsorbed from the tubular fluid to produced concentrated urine.

Explanation:

Countercurrent multiplication moves sodium chloride from tubular fluid into interstitial space deep within the kidneys. The concurrent multiplication process build up osmotic gradient interstitial fluid in a single effect. Here, sodium chloride is driven by active transport out of the tubular fluid in the thick ascending limb into the interstitial fluid, which becomes hyperosmotic. This result to water moving passively down its concentration gradient out of the tubular fluid in the descending limb into the interstitial space to a point where it attains a state of equilibrium.

Therefore,the correct option is A, where the ions leaves the ascending limb to make water comes out of descending limb.

4 0
3 years ago
Write down four differences between plant and animal cell
ehidna [41]

Answer:

Plant cells have cell wall but animal cell doesn't

Plant cells have chloroplast  but animal cell doesn't

Plant cells has large vacuole but animal cell has smaller vacuole

5 0
3 years ago
According to carl rogers, the ________ is how people see their actual traits and abilities.
masha68 [24]

According to Carl Rogers, the <u>real self</u> is how people see their actual traits and abilities.

  • The Real Self and the Ideal Self make up the personality, according to humanistic psychologist Carl Rogers.
  • They are words that are used to characterize a person's personality facets. The true talents, aptitudes, preferences, and attributes of an individual are reflected in one's real self.
  • The ideal self and the real self were further split by Rogers into two groups.
  • The difference between your real self and your ideal self is that the latter is the person you truly are. Rogers emphasized the requirement for consistency between these two selves.
  • For example, your ideal self might be someone who spends a lot of time learning, does well in science topics, and is not sickened by the sight of blood. If your Real Self differs significantly from this idealized version, you may feel unsatisfied with your life and like a failure.

learn more about Carl Rogers here: brainly.com/question/14988475

#SPJ4

4 0
2 years ago
Many marine organisms depend on up welling to bring nutrients to the surface. How might El Nino affect a fisherman's way of life
svp [43]
During an El Nino, warm water gathers along the West coast of South America, so the nutrient rich water is no longer being upwelled. keeping in mind that cold water sinks and warm water rises, usually the warm water near coastal regions would not be full of nutrients compared to the cold water where the nutrients fall. therefore, more fish will be located or migrate to areas of this nutrient rich cold water instead. So, many fishermen would not have high yields of fish ultimately affecting their way of life and money. also a lot of these fish that remain at the surface would not be as healthy or nutrient rich.

hope that helps! :))

3 0
2 years ago
What challenges do hydrostatic pressure creates for marine scientists
KengaRu [80]

Answer:

The oceans are present on the 70 percent of the world but only 5 percent of the total oceans are explored yet.

There are many reasons of this problem but the most important is the hydrostatic pressure.

Hydrostatic pressure can be described as the pressure or weight exerted by the water on the object.

With every increase in 10 meters the pressure increase by 6.47kg (14.27lbs) each square inch of surface.

Due to extreme pressure, oxygen level in the cells of body fluctuates and person becomes unstable and can become unconscious.

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