Answer:
I think it is a because the oldest things would be farther down in the ground and the youngest would be upper to the ground if that makes sense
Use of chemical fertilizers
Answer:
Many scientists favor the RNA world hypothesis, in which RNA, not DNA, was the first genetic molecule of life on Earth. Other ideas include the pre-RNA world hypothesis and the metabolism-first hypothesis. Organic compounds could have been delivered to early Earth by meteorites and other celestial objects
Answer:
Becuase in canada here it snows and yeah.
Explanation:
