Scientists collect information that allows them to make evolutionary connections between organisms. Similar to detective work, scientists must use evidence to uncover the facts. In the case of phylogeny, evolutionary investigations focus on two types of evidence: morphologic (form and function) and genetic.
Answer:
create the heat-reflective layer that keeps the Earth at a livable temperature
Explanation:
O2 (oxygen) is a covalent compound
The beginning of the Eocene Epoch Era.
