Its b. Ecosystem
Population is the number of a species in an area, it has nothing to do with physical characteristics.
Abiotic is just an adjective meaning not alive
Competition is just the interactions between organisms in the struggle for food, water, space, mates, and many other things again not physical characteristics
Answer:
a
Explanation:
both of the cases the organisms are fighting for a resource
Answer:
B. There are three codons that signal the end of a gene.
Explanation:
<span>that would be 200,000 ybp</span>
