I'm pretty sure its c or d
Answer:
Newly exposed or newly formed rock is colonized by living things for the first time.
Explanation:
In other world rock is being inhabited. A community is beginning to form.
Answer:
The population first grows, stabilizes, and then declines.
Explanation:
A researcher is studying a population with a unique age structure. An age structured histogram he has developed over the course of several decades has undergone transformations in shape, from a pyramid shape to a roughly rectangular shape to an inverted pyramid shape (where the base is narrower than the top). The population first grows, stabilizes, and then declines.
Answer:
c. A at the top of the saturated zone.