Searched it up on Google. It says Symbiosis
Answer:
D. It release hormones into the bloodstream.
Explanation:
I think.
D. homologous chromosomes pair up
Answer: It is because it makes it more efficient to study organisms.
Explanation: Biologist classify organisms by considering similarities between them. The organisms which have closely related characteristics are placed in a separate domains by biologists. Domains are further divided into 6 Kingdoms. According to modern classification system, domain is largest unit of biological classification.
