What is the biggest cause of extinction today?
a. pollution
b. exotic species
c. global warming
d. habitat loss

In what I've read, both loss of habitat and global warming were listed as number one causes of the extinction. Loss of habitat affects the climate. I think loss of habitat would be my choice.

Iam not sure but to me it with be a or dsorry if i was late! hope this ! : )if you really want me to find out the answer that is correct tell me and i will do more research but the a or d makes sense to me.

The open ocean begins at the low-tide mark and extends to the end of the continental shelf

above statement is not a true statement about the open ocean because the open ocean has low levels of nutrients. most of the photosynthetic activity on earth occurs in the open ocean within the photic zone. organisms in the deep ocean are exposed to frigid temperatures and total darkness but it does not begin at the low-tide mark.