Most of the costs associated with using renewable resources are due to
a. overuse of resources
b. atmospheric pollution
c. lack of availability
d. global warming

The best answer would be A. Most of the costs associated with using renewable resources are due to overuse of the resources. Although, these resources are abundant and available, we should keep in mind that overusing something will always have negative effects on the environment and, consequently, to humans. Overuse will eventually lead to the depletion of these resources or an unbalance state of the ecosystem and since we know these resources are renewable maybe we should take care of them or replace what we get from the environment.