question one is actually mass, and question 2 is D.
Answer:
A. Phytoplankton
Explanation:
They as producers contribute the most. Others do too, but not as much.
<span> What is the basic building block of all pure substances that make up matter in the world are atoms
A. Atoms
</span>
Explanation:
Even though the question is asked under Biology, I don't know any definition of network in biology but in I.T it is an interconnection of several computers to share data information
