ANSWER: Nitrogen, oxygen or gas, dust particles
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X-rays are the radiation that allows us to see through the skin to visualize bones
Answer:
If a planet is considered habitable it means that the planet has all the conditions necessary to support life ,these conditions can be the presence of oxygen
Answer:
<h2>Exaptation</h2>
Explanation:
Exaptation is the process by <u><em>which the features acquire those functions for which they were not originally selected</em></u> or adapted. Feather is an example of exaptation, it has appeared in various fossils of the flightless ancestors of modern birds, it later became important for flying, Once they molded for flying it adapted for that function, It is found in both behavior and anatomy.
