The passing of traits from parents to offspring. A.
Replication
B.
Gene Expression
C.
Genetics
D.
Inheritance

primary succession occurs in essentially lifeless areas regions in which the soil is incapable of sustaining life as a result of such factors as lava flows, newly formed sand dunes, or rocks left from a retreating glacier. secondary succession occurs

the fossil record provides evidence of a common ancestor to many species.

the tricuspid valve is present between right atrium and right ventricle