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WITCHER [35]
3 years ago
13

Birds have been observed puffing

Biology
2 answers:
Vlad1618 [11]3 years ago
8 0
It's an important part of the bird's ability to maintain its body temperature. 
Air is a poor conductor of heat, so the air trapped among the feathers
prevents the loss of heat in cold atmosphere, and prevents overheating
in hot atmosphere.  Much like our wearing several layers of clothing.  
likoan [24]3 years ago
6 0

the air pockets help the bird keep its body heat in its feathers keeping it warm.
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Answer:

The answer is A) Homologous structures

Explanation:

Homologous Structures:

  • Homologous structures are anatomical features in an organism that are structurally and functionally diverse but they originate from a single common ancestor.
  • Homologous structures possess a similar basic internal structure but can have entirely different morphology and function.
  • For example, the wings of a bat and a human's arm have the same internal structure but they have different functions.
  • Vestigial structures are evolutionary remnants that no longer serve a purpose in modern forms or descendants of the original organism.
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3. The time between the end of ventricular systole to the beginning of atrial systole.
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Answer:

The time between the end of ventricular systole to the beginning of atrial systole is 100 ms or 0.1 seconds.

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Ventricular systole is the removal of blood from the heart by pumping through aorta and pulmonary vein. Both aorta and pulmonary vein receive the blood from the heart. Aorta receives oxygenated blood and pulmonary vein receive deoxygenated blood, while atrial systole is the addition of blood into the ventricular from vena cava and pulmonary artery due to contraction of heart. This process occurs in 100 ms.

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3 years ago
Explain two effects that the study of genes could have on the future.
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1) determine the probability of individuals inheriting a disease
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4 years ago
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A caterpillar has an exoskeleton and feeds on many leaves before it makes a cocoon and becomes a butterfly. Which type of organi
Nutka1998 [239]

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heterotroph and an invertebrate

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In this case, caterpillars are said to feed on many leaves before it makes a cocoon and becomes a butterfly. This means it relies on plants (leaves) for food, hence, it is HETEROTROPHIC. Also, it has an exoskeleton i.e. skeleton present outside the body. This means that it does not possess any bone inside to form the backbone, and hence it is an INVERTEBRATE.

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