* What is a coral skeletal structure that has voids between the polyps?

a.) organic structure

b.) perforated structure

c.) exhaustive structure

A

Explanation:

Each polyp makes its own cup-shaped skeleton called a calyx ("KAY-lix)" from limestone (calcium carbonate). The base of the calyx is called the basal plate, and the outer walls of the calyx are called the theca ("THEE-kuh")

I'm pretty sure it's A

Explanation:

coral skeletons are biocomposites (mineral+organics) or calcium carbonate

humans can cause extinction of a species through overharvesting, pollution, habitat destruction, introduction of invasive species (such as new predators and food competitors), overhunting, and other influences. explosive, unsustainable human population growth is an essential cause of the extinction crisis.

explanation:

i didn't have the answer choices , but i tried my best.