Answer:
As above discussed an ecosystem is the diversity of many communities of organisms where they interact with living (biotic) as well as nonliving (abiotic) thing whereas community contains the variety of populations of different species linking with each other in a region.
Explanation:
Mutation is the alteration of the DNA. therefore when mutation occurs, the genetic variation increases. hence population increased
It is true that the flagella also helps an organism move through it’s environment, but it does not help it feed.
The cilia help an organism move through it’s environment, and they help push the food into the organism’s gullet. Cilia are like little hairs all around the organism.
The correct answer is A.
Probably deserts or plains... are there answer choices ? if there are can you add them in the comments :)