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nadezda [96]
3 years ago
10

In contrast to ectotherms, endotherms

Biology
1 answer:
iris [78.8K]3 years ago
6 0
<span>b) create and conserve body heat

</span>
Endothermy is a physiological characteristics that enables  some animals to control their body temperature unlike exothermics. This mechanism is important due to sudden change in temperature or uncontrollable conditions set by the harsh environment. 
<span>So birds sharks salamanders and other related animals have this function.</span>
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What is occurring when a transport protein uses energy to pump a solute against its gradient across a
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Answer:

Active transportation

Explanation:

Active transportation is happening because energy is need to pump against the gradient. Whenever energy is used the transportation is active.

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3 years ago
How does the pH of the solution on the right compare with that of the solution on the left?
Trava [24]
It would be C... 0-6 is acidic, 7 is neutral, 8-14 is basic
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Why is the epigastrium where starch is digested?
svetoff [14.1K]

Answer:

Mark me as brainliest plz!!

Explanation:

Most carbohydrate digestion occurs in the small intestine, thanks to a suite of enzymes. Pancreatic amylase is secreted from the pancreas into the small intestine, and like salivary amylase, it breaks starch down to small oligosaccharides (containing 3 to 10 glucose molecules) and maltose.

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3 years ago
Question 1
Sonja [21]
Interphase is the first.
5 0
3 years ago
Cichlids, a type of fish, were introduced to a lake around 200 years ago. Over the years, the fish have developed into two disti
alina1380 [7]

Answer:

sympatric speciation

Explanation:  

Different sympatric species have the same closest ancestor and live in the same area but inhabiting different niches.

The steps for sympatric speciation are:

  1. An ancestral species inhabit a geographic area.
  2. With time, different populations of the same species occupy different niches or microhabitats in this general area.
  3. As the microhabitats are different, they have different environmental pressures that are acting on each population.
  4. These pressures lead to the origin of differences between groups, which need to adapt to each environment
  5. Each population suffers genetic changes due to environmental conditions. These changes are inheritable.
  6. With time, these differences drive to the final complete divergence of populations, becoming different species and reproductively isolated.

In sympatric speciation, the interruption of genetic flow must be fast, and there must be differences in niches so no species can compete and displace the other species. <em>Speciation occurs in the same distribution area of the original species</em>. The new species originate in a place with no physical barriers but different environmental pressures.

In the exposed example,

  • <em>The introduced Cichlid fishes 200 years ago</em> → Original species and the common ancestor between the new derivated species
  • <em>The lake</em> → general geographic area
  • <em>The main lake and the streams</em> → Microhabitats or niches with different pressures each
  • <em>The groups are splitting into two genetically and physically different types of fishes. They do not mate. There is no genetic flow between groups.</em> → Speciation process.
7 0
3 years ago
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