Which is the best way to determine a species population in an area?

a. subtract those leaving the area from those in or arriving at the area.
b. add up the sustainability in an area, and subtract the number of deaths.
c. subtract the carrying capacity from the original population.
d. add up the animals that have been born recently.

A.- Subtract those leaving the area from those in or arriving at the area

Explanation:

As in demography, a total population of a specie is determined by the total of the individuals of a specie, less the exit or death of an individuals of a that specie, in a given time

lunar landing mission. apollo 11 was the first manned mission to land on the moon. the first steps by humans on another planetary body were taken by neil armstrong and buzz aldrin on july 20, 1969. the astronauts also returned to earth the first samples from another planetary body.

explanation:

c. the initial amount of money placed in the savings account