<span>ammonium nitrate is found in fertilizers</span>
Answer:
<u><em>Proteins are large, complex molecules that play many critical roles in the body. They do most of the work in cells and are required for the structure, function, and regulation of the body’s tissues and organs. </em></u>
<u><em>Proteins are made up of hundreds or thousands of smaller units called amino acids, which are attached to one another in long chains.</em></u>
Explanation:
Answer: Ice cores.
Explanation: Ice cores are commonly studied by scientists to find out what the climate was like decades and centuries ago.