<u>Necessary for natural selection:</u>
It is the process in the evolution. It explains the nature and it is responsible for the evolution of adoption in the organisms to their environment. The four types of the natural selection are reproduction, heredity, variation in fitness and the variation in the individual characters among the member in the population.
It is the important factor to analysis the environment and reproduction of the organisms. The offspring are resemble same as their parent in the natural selection.
Carbon dioxide removal (CDR)
- Ureter transfer the urine from out kidney to the uninary bladder
-Urinary bladder's responsibility is to keep the urine until its full
-Uretra channels the urine out of the body..
What?
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