Answer:
<h3>A</h3><h3>Tree roots anchor soil in place,preventing runoff. </h3>
Explanation:
<h3>I hope l helped you. </h3><h3>Please follow me. ❤❤❤</h3>
Thermodynamics is the correct answer.
Answer:
B is oldest because it is at the bottom which entails that it is the oldest.
Explanation:
The R group varies, and it is the carbon-phosphate backbone