Answer:
The answer is A. The cell membrane provides rigid support and protection for the cell
Explanation:
The semipermeable structure that surrounds the cell helps the cell live in different environments
Explanation:
Spillover infection, also known as pathogen spillover and spillover event, occurs when a reservoir population with a high pathogen prevalence comes into contact with a novel host population. The pathogen is transmitted from the reservoir population and may or may not be transmitted within the host population.
D - an increase in tree cover in the tundra.
