Macrophages rid the body of worn-out cells and other debris.
The rock layer on the bottom will decompose and either turn to sand, gravel, or blend in with the dirt (but most likely not the last one).
TRUE. Most drugs are eliminated by the kidneys in urine although some are excreted in saliva, sweat, or exhalation.
Answer:
C: Fire
Explanation:
Natural and anthropogenic (caused by human) fires could lead to destruction of existing climax community. This leaves the habitat open for the secondary succession where a pioneer species can enter. Lava flow and wind are the natural cause of succession while over-cutting of trees is its human cause.
