To be able to compare the results to a sample without any of the independent variable added.
The genetic info is found in the nucleus.
A cactus can survive in really dry, hot weather. They store water in their "trunk." Just think of where a cuctus lives. They live in a desert. A desert is dry, hot, and lots of sun. Cactus manage to survive in that enviroment.
~Deceptiøn
the answer you're looking for is OVERPOPULATION. Overpopulation is when the carrying capacity of the land is exceeded. I hope this answer helps u out on your test and have a great day.
There would be an increase in dead matter and a lack of nutrients in the soil.
Decomposers break down dead matter, so without them there will be an increase.
They then return the nutrients from the dead matter to the soil, so there will be a lack of nutrients in the soil.
Examples of decomposers are mushrooms and earthworms.