Mass extinctions have helped create fossils and other historical artifacts that may help scientists come up with when things were around, and what they may have looked like; therefore creating the geologic time sal.
Answer:
There are more producers in an ecosystem.
Explanation:
This can be explained using the 10% Law given by Raymond Lindeman.
True
It was made known after 550 BCE when a monk snuck the silk worm out of the country.