Question

What determines the carrying capacity of an ecosystem?
a.
the number of different types of organisms in an ecosystem
b.
the amount of available resources
c.
the square mileage it encompasses
d.
the ratio of biotic to abiotic factors

Answer 1

b. The carrying capacity is set by the amount of available resources (food, water, shelter, space, etc.) and other limiting factors (predation, disease, abiotic conditions) that constrain population size.