This means that we all are the descendants of one ancestor !! thus our genes match !!
Answer:
<u><em>Ancestors</em></u>
Explanation:
Ancestors can be described as the persons from which a particular human being originated. In a broader perspective, it is referred to family history of a person. Scientists believe that all organisms on Earth originated from a common ancestor which were the prokaryotes. The prokaryotes with time gave rise to the eukaryotes. Common descent is the phenomenon in which organisms having common ancestors are referred.
Answer:
We have to evolve or we will just slowly die off.
Sediment; There is a source of heat that was not included in the question to create all the other choices.