Occurs in a place that had no ecosystem before.
A. Secondary succession
B. Pioneer species
C. Ecological succession
D. Primary succession

The answer is D
Not C

What claim did thorne make? what evidence supported his claim?

Stem cells found adult tissue such as in bone marrow brain muscle skin and liver are only capable of what

Which layer of the eye completely surrounds the eye except for a dark, round opening called the pupil? a. sclerab. corneac. retinad. choroidthe answer is a sclera