1. Carbon is important because: A. it is part of the carbon cycle
B. it makes up part of all life forms on Earth
C. it is related to oxygen
D. it is found in excess in the ocean

B

Explanation:

All organic material has carbon.

the answer is b. :

where are the choice options?

a saline water is fed to a reverse osmosis unit at flow rate o rotameter connected to reject (retentate) line reads 8 installed in reject and permeate line reads 15.2 milli siemens/cm and 300 micro siemens/com respectively.