A geologist visits an environment to make observations. The scientist predicts that the environment will undergo secondary succession. What did the geologist likely observe in the environment to draw this conclusion? Check all that apply a
The geologist saw rocks and gravel.
b
The geologist saw cooled lava flows.
c
The geologist saw remaining soil.
d
The geologist saw a few plant species.
e
The geologist saw a few small insects.