Answer:
its the maximum amount that can be taken without depleting the resource or population over the long-term.
Explanation:
A is the answer. Hope that helped.
The effect of chemical pollution on insects living in a pond i think
The fertilizers used by farmers can have negative effects on aquatic ecosystems because there is every possibility that the runoffs from the fields can create an algal bloom in the nearby water body. This algal bloom can have a very negative effect on the living organisms of the aquatic body. I hope it helps.