Underground water like in a well can't clean itself because of man made pollutants, from large farms that seep through the ground. there is little agitation to keep it areated, and becomes stagnant, which develops bacteria and other pathogens to make us sick..
Positive re. — he gets a reward for doing something correctly.
Answer:
hmmm
Explanation:
becaus they are too defficult to say it
I think it might be A.) Day. Because when the axis is pointed towards the sun, that shows it is day because that area has sunlight in which you get during the day. It is night when the axis is pointed away from the sun because there is no sunlight in that area which causes darkness in which we get during the night obviously. Winter occurs when the earth is far away from the sun, in which there is no heat, and closest to the sun in which we do get heat, there will be Summer.
Hope this helps some.
After The Mexican Revolution was over Guadalupe.V was first president. I think.