Endothermic feature distinguishes birds from the rest of the reptiles. So, the correct option is (a).
A crucial adaptation that allowed reptiles to exist on land was the growth of their scaly skin, that stopped water loss from the skin. Ectotherms are animals whose primary source of body heat is the environment. Reptiles fall under this category. They control their body temperature using behavioural strategies including self-heating by basking or self-cooling by seeking cover in burrows or shade.
Birds are endothermic, in contrast to reptiles, which means they produce their own body heat through metabolic processes. The feathers on birds, which are repurposed reptilian scales, are what set them apart from other animals. The first birds' feathers allowed them to glide and eventually take to the air in a flapping motion. They also served to insulate the bird's body and aid in the preservation of body heat.
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15. What's the requirement of every single natural process on Earth?
answer: Energy source
Answer:
If the receptor sites for the neurotransmitter are blocked, the neurotransmitter is not able to act on that receptor. Most of the time, the neurotransmitter will then be taken back up by the neuron that released it, in a process known as "reuptake".
Explanation:
Answer:
First off, this isn't Biology, second off your answer is
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old crescent moon old crescent
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Explanation:
What are Microbes?
They are Microorganisms that are too small too see with the naked eye. (without a microscope) They are found on every surface and in every habitat around the world that includes out own body. They are categorized into five major groups: Bacteria, Viruses, Algae, Fungi, and last but not least Protozoa.