The correct answer is B.
Population growth is correct because humans need water to
survive. Actually not just humans, all living things need water for survival.
Hope this helps!
Discussion:
<span>Some people may think it is A. The truth is “the amount of
evaporation” is incorrect. Amount is doesn’t depend on the amount of water. It
depends on heat. </span>
The Tower Karst <span>represents the most advanced stage of erosion.</span>
I'm not sure if I will answer the question you asked, as I many have interpreted it incorrectly. In natural selection, there must be variance in the gene pool, the total frequency of alleles in a population. Now, one of the organisms may have a gene that somehow helps them survive from the selective force much better compared to the others. If this does happen, over time the gene pool will narrow down to become just the genes of that organism that survived better in the first place because the rest would be taken care of by the selective force. So, the alleles and trait come from the first organisms that had the advantage over the others of its species.
Answer:
Leukemia may be defined as the cancer of the blood cells especially white blood cells. The leukemia may occur due to mutation or may also occur due to the biological agents.
Leukemia causes the abnormal and uncontrolled growth of the blood cells. These white blood cells are unable to fight with infections and causes the bone marrow to produce impair formation of blood cells. The patient shows abnormal growth and large count of leukocytes.
