Answer quickly

Natural selection operates on populations over many generations. Which of the following allows natural selection to occur?

A.
the old age of the individuals which causes them to die
B.
the desire and the advantage of a population to remain constant
C.
the unequal ability of individuals to survive and reproduce
D.
the abilty for populations to change quickly from one trait to the next

C. The unequal ability of individuals to survive and reproduce.

Explanation:

Not everyone has the same ability to reproduce and survive due to their traits. Some traits are advantageous, some are neutral, and others are disadvantageous. This causes natural selection to rule out individuals with disadvantageous traits, causing the population to change.

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.    

children tend to take more after their grandparents more than their parents. it’s the dna you received that was passed down to you somewhere in your family. maybe one of your grandparents had/has straight hair and you might have gotten it from them.