12. if an ecologist is looking at how many individual organisms live within a certain population, he or she is studying the population

a. interactions.
b. range.
c. density.
d. dynamics.

The answer would be C or Population Density

C. density.

Explanation:

Population density can be define as the number of individuals of the population of a species living in a particular area over a concerned time. It is affected by the death, birth, immigration and migration of the members of the concerned population.

On the basis of the above description, this can be concluded that the ecologist is looking for the population density.

the answer is c

explanation:

answer; atp and nadph;