Why are human populations not limited by the carrying capacity of their ecosystems? need it a: humans use their knowledge to locate resources. b: humans need less space than other species c: humans have novel ways to compete for resources d: humans are more cooperative than other species

 A: humans use their knowledge to locate resources.

Explanation:

The carrying capacity can be defined as the maximum number of individuals in a population of a species that an ecosystem or region can support on the basis of availability of water, food, habitat and other needs necessary for survival. Sometimes, the population of the species increases exponentially exceeding the carrying capacity of an ecosystem when the resources available are surplus.  

The human populations are not limited by the carrying capacity of their ecosystem this is because of the fact human beings possess special intellectual and thinking abilities which make them capable of availing themselves resources. They posses knowledge which allows them to search, and find resources even from the earth extreme locations not suitable for survival.

Therefore,   A:  humans use their knowledge to locate resources. is the correct option.