Identify the effects of the disorders that weaken the immune system. 1.there is a decrease in the production of . 2.immune cells mistake healthy cells as . 3.abnormal cells crowd out cells and steal nutrients. 4.the body is susceptible to .

1. Antibodies

2.Pathogens

3. Healthy

4. disease

succession returns a disturbed

ecosystem to a more stable state. this is also classified into two (2) types:

primary succession and secondary succession. the primary succession arises when

a new land is transformed and a bare rock has been exposed providing an environment

that can be occupied for the first time. while, secondary succession occurs

when a previously occupied environment was disturbed that kills much of all its

community

explanation: