Question

A receding glacier leaves behind rocky, barren land. How would life begin on this land?
a-interspecific interaction
b-primary succession
c-secondary succession

Answer 1

secondary succession for sure

Answer 2

oops im wrong, its primary succession, sorry

Answer 3

Primary succession is one of two types of biological and ecological succession of plant life, occurring in an environment in which new substrate devoid of vegetation and usually lacking soil, such as a lava flow or area left from RETREATED GLACIER, is deposited. In other words, it is the gradual growth of an ecosystem over a longer period.
http://en.wikipedia.org/wiki/Primary_succession