If the organisms at level 2 were to decrease, explain what would happen to 6 points the population of organisms at level 1 and level 3*
The diagram shows a pyramid of biomass for a food chain with 5 levels.
5
4
3
2.
1
Yout answer

Which statement best describes a keystone species? o a. it has littlelmenetic variation. it has an extremely high population. 0 b. 0 c. it remains unaffected by all environmental changes. od. it has a strong influence on the ecosystem. 0 e. it's the first species to populate a new ecosystem.

When analyzing tree rings, what do scientists assume a thin ring indicates?

This is so important ugh its 25 points