Answer:
Relative Dating with Fossils: Index Fossils as Indicators of Time
Explanation:
I believe it’s cover crops but i could be wrong hope it helps
Avoid carcinogens (like smoking residues..etc), eat healthy and sleep well in order to maintain a strong immune system
The sentence that states that " When Donnie is unhappy with how an experiment has turned out, he chooses not to share his findings with the public or his colleagues"
"he continues performing an experiment until he reaches the conclusion that he wants and expects. "
