Give us Choices, but I’m guessing it’s limiting factor
I can say for certain that it's really probably not A. or D.
As for B. or C., I'd say C.
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.
As we burn fossil fuels, which are carbon containing compounds, for fuel, we increase atmospheric carbon dioxide at a rate faster than carbon-fixing components of the cycle, like plants, can use it, leading to increased carbon dioxide.
