Members of porifera are diploblastic. which statement clarifies this?
a. they are unsegmented.
b. they have a true body cavity.
c. they have two germ layers.

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.

climate change and pollution