Primary succession: <u>is a process by which a community arises in a virtually lifeless area with no soil. </u>
Secondary succession:<u> follows a disturbance that destroys a community without destroying the soil.</u>
Embryonic development involves process of formation and development of an embryo. In humans, during the early stages, 10 weeks of embryonic development, all the major body organs are formed.
D. One sex has a higher chance to inherit it than the other (male).
These can be either recessive or dominant. We usually think more of the recessive traits like color blindness and hemophilia but dominant sex-linked traits also exist (fragile X).
A.The radiation damages a person’s DNA, which causes a mutation that makes the cell divide out of control.
