Ill say something that actually has a true meaning to you and you care about it also you wouldn't ever just give it up.
Answer:
a. It can be used for photosynthesis.
Explanation:
Since carbon dioxide is needed in the photosynthesis process, then much of the carbon dioxide which is produced by green plants is not always excreted in form of metabolic waste because it can be easily used in the photosynthesis process.
<span>In 2013 the suicide rate in the United States was 13 per 100,000 people, the highest recorded rate in 28 years. The U.S. suicide rate also rose 24%
over the 15 previous years (1999-2014), In 2009, suicide was the
seventh leading cause of death for males and the 16th leading cause of
death for females.</span>
