16a + 20 is what it equals, I hope this helps!!
Answer:
If distinct biological species are to coexist in sympatry, they must be reproductively isolated and must exploit different limiting resources.
Explanation:
The small molecules that chain together to form a protein molecule are called amino acids an example of which could be glycine
b) some bacteria reduce nitrate ion
It's a tissue. An organ is a group of different tissues which (though they perform slightly different functions), work together in the same general processes.
