Electrons orbit the nucleus of the atom in electron clouds.
"Dalton's Atomic Theory
"1) All matter is made of atoms. Atoms are indivisible and indestructible.
"2) All atoms of a given element are identical in mass and properties
"3) Compounds are formed by a combination of two or more different kinds of atoms.
"4) A chemical reaction is a rearrangement of atoms"
source: http://www.iun.edu/~cpanhd/C101webnotes/composition/dalton.html
The answer is b)<span> groundwater was overpumped
As population in Mexico City and the </span><span>San Joaquin Valley skyrocketed, the demand for water also increased.
Mexico City was once the most populated city on earth and that created a lot of burden on the cities infrastructure including the water supply.
The groundwater was over pumped leading to huge problems for millions of people.</span>
They were treated like they didnt mean anything to anyone because they were slaves. If you were a slave you were treated like an animal. There was a woman named Harriet Tubman and she risked her life over and over again trying to help slaves escape.
George Washington the dollar bill
Answer:
typhoon, the other 3 are all direct results of being in the ring of fire
