This is the part of the ocean that is too deep
to receive any sunlight.
A. Photic Zone
B. Aphotic Zone
C. Neretic Zone

Where in the cell are ribosomes made?

Me the formula cacl2 represents the compound

Which of the following is a reason why early living organisms on earth could not have survived on the surface? 1. the lack of an ozone layer 2. the lack of oxygen in the atmosphere 3. the fact that these organisms were single-celled