I think that would be answer choice b because it states in the question "existed earlier in time" and evolution is basically things that existed at an earlier time adapting to environmental changes to evolve into something different for their benefit
Answer:
the answer is b it comes down to b and c for me
I believe the answer to your question is the cortex
Answer:
Left atrium
Explanation:
The four pulmonary veins return oxygenated blood to the left atrium.
<span>In any population of bears, some individuals have thick fur, some have thin fur, and some are in between. As temperatures increase with the passage of time, the survival of bears with thin fur will increase, and the number of bears in the population with thick fur will decrease.</span>