Answer:
Explanation:
This is usually because when they first became fossils, they embedded into the ground. Over many years afterwards, more layers came to cover that layer and so on. Newer fossils would be embedded into newer layers. That's why the older ones tend to be found the deeper you look.
Energy from sunlight is captured
Explanation:
the last option is the correct answer
Bright sunlight, lack of competitors, and more carbon dioxide