The rate of species extinction on Earth is currently very high—perhaps as high as it has been since the time of the dinosaur extinction. Which of the following disruptions is not a major cause of this high extinction rate? a The hunting and overfishing of wildlife b The introduction by humans of invasive species into habitats c The use of animals in scientific research and experiments d The draining and filling of wetlands

C. The use of animals in scientific research and experiments.

Explanation:

I got this answer correct when I took it.

the element that provides strength to the exoskeletons of clams and oysters is phosphorus.

this is so because calcium carbonate is the main component in the shells. calcium carbonate is strengthened by phosphorus.

explanation:

✿   this landform has a high elevation and a high relief

✿   this landform is a mountain