Answer:
I think this would help you Sun, water, food, animals, etc.
The organism that was most likely to live at the same time as brachiopods were
Trilobites
Brachiopods were like lamshells. They lived underwater, had soft bodies and their shells were bivalves.
Trilobites had three-lobed bodies. They could swim, crawl, and burrow.
The answer is A, Viruses
Viruses cannot reproduce on their own , so they have to inject their DNA or RNA into the nucleuus of a cell. By doing this, the virus will take over that cells and within times, that cells will pop up and producing more viruses.
This reproduced virus will repeat the same process until our immune systems stop them
Answer:
Natural selection
Explanation:
The genetic variation on which natural selection acts may occur randomly, but natural selection itself is not random at all. The survival and reproductive success of an individual is directly related to the ways its inherited traits function in the context of its local environment.
The flow of energy through a food chain and is the focus of study in ecological energetics In an ecosystem ecologists seek to quantify the relative importance of different component species and feeding relationships
