Question

Help me? PLZzz

Answer 1

What is a major source of calcium and sodium in oceans?
A) air pollutants
B) gases from active volcanoes
C) minerals dissolved in aquifers
D) weathering and erosion of rocks

Answer 2

Earth's oceans contain many dissolved elements like calcium, sodium, and chlorine. These elements plus several others combine to form the salts in the oceans.

Answer 3

D

Answer 4

thankuuuuuu

Answer 5

Tides are caused by gravity right??

Answer 6

NO DIRECT ANSWERS...

Also, D too.


(yes, they are)

Answer 7

'Gravity is one major force that creates tides. In 1687, Sir Isaac Newton explained that ocean tides result from the gravitational attraction of the sun and moon on the oceans of the earth (Sumich, J.L., 1996).'

http://oceanservice.noaa.gov/education/kits/tides/tides02_cause.html