Precipitation differences are the factor that does not contribute to "water stress" on the Earth.
<u>Explanation:</u>
- Less ocean water sources, population differences, Scarcity of economic water resources are the factor which leads to water stress on the Earth.
- Precipitation differences do not cause much difference in water stress. So it will not contribute to the water stress.
- An increase in population will cause major water stress because availability drinking water is less in the earth. Population increase can cause a major problem.
The mRNA needs to copy the gene sequence of the dna before it leaves the nucleus to the tRNA and rRNA
Answer:
11) A. The optimum pH of an enzyme is 6.6
12) C. A control group
