R-organisms reproduce at a very high rate. knowing this, why don’t they usually reach their carrying capacity?
(a) they live in environments with many predators that feed on them. (b) they are regularly killed off by disease and/or drought. (c) their life span is too short. (d) a and b only

Option D

Explanation:

Carrying capacity can be defined as the maximum number of organisms( maximum load) an environment can carry after providing suitable food, shelter and other necessities.

The R-organism reproduce at a very high rate but they do not reach the carrying capacity. This is because there are many predators that feed on them.

Else, they are also killed by disease or stress conditions. This is the reason they do not reach the carrying capacity.

from my research i have to the conclusion that decomposers, such as fungi, bacteria and invertebrates, play a critical role in nutrient cycling and without them the earth's ecosystem may not support life as we know it. elements such as carbon, nitrogen and phosphorus exist in limited amounts on earth, although huge amounts of carbon are being released into the atmosphere from underground sources now by humans. it is still extremely important that other nutrients be retained by the process of re-use. decomposers are organisms that are able to chemically break down dead material and make these elements available for use by other organisms. without this breakdown of dead material, dead bodies would pile up. so decomposers also play a role in clean up also. without them, life might not continue as we know it and dead material would overwhelm the earth.    

answer: 45

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