Answer:
A
Explanation:
Organisms on Earth use nitrogen to build proteins necessary for cell
development.
In the Grand Canyon, there are clear horizontal layers of different rocks that provide information about where, when, and how they were deposited, long before the canyon was even carved.
Phytoplankton
They are the only one that are both animals and protists as they can be either
Answer: <em>species diversity
</em>
<em>
</em>
<em>ecosystem diversity
</em>
<em>
</em>
<em>genetic diversity</em>
Answer: Medication can be tested on the cancer culture before being injected into the patient.
