Answer:
A: white blood cells are growing uncontrollably
Explanation:
Answer:
An organism's niche includes food, shelter, its predators, the temperature, the amount of moisture the organism needs to survive, etc. When two or more individuals or populations try to use the same limited resources such as food, water, shelter, space, or sunlight, it is called competition.
Explanation:
Http://www.indiana.edu/~geol105/images/gaia_chapter_3/wegener.htm
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Some species are able to reproduce at a fast rate, creating large populations that ensure some individuals will survive.
