Answer:
A. Layers that cut across the most other features are youngest.
Explanation:
Using the principles of cross-cutting relationships, you can determine the relative age of rocks found in the ground. The idea behind it is that the geologic feature which cuts another is the younger of the two features, and it had been around for 400 years. It's not very precise but it is good for determining relative age.
1) anatomical similarities
2) embryonic development
3) vestigial structure
4) comparative anatomy
Answer:
energy
Explanation:
energy allowed organisms to do work.
Explanation:
Car exhaust can have many negative effects on plants and animals. ... Similarly, soot particles produced by car exhaust can impair breathing, damage lung tissue and cause cancer in animals, while making it impossible for plants to photosynthesize, convert light to energy.