Answer:
mixing chemicals together
Explanation:
eating and drinking
The answer is vehicle fuel
The two are blood and lymph
Environmental science is the science including ecology, biology, physics etc. <span />
Answer: 4.How does the volume of water consumed affect the number of facial blemishes that individuals receive every month?
Explanation:
A hypothesis is a presumed explanation that is based upon few facts. The statement of the hypothesis can be verified by scientific procedures.
According to the given hypothesis, the relation of consumption of water with the number of facial blemishes is to be determined. Therefore, option 4 is the correct option.