Which feature might be used to distinguish secondary succession from primary succession? A. the lack of pioneer species in the second stage
B. the presence of pioneer species in the final stage
C. the presence of trees and large plants in the final stage
D. the presence of soil and organic matter in the first stage.

Gregor mendel is best known for his work with pea plants and for uncover many of the mysteries of genetics. one of his major findings stated that there were specific, physical units of inheritance that are transmitted during reproduction. what is the the name given to these units of inheritance which can be found on chromosomes? a) centromeres b) cytoplasm c) genes d) nucleotides