Answer:
241
Step-by-step explanation:
Answer:
They are different because in the mantle, the magma is heated, it becomes less dense and rises. It give off it's thermal energy and cools down, becoming more dense and descend to be heated again.
In the ocean, the tropics warm the water and it travels to the poles to cool down, then returns to the tropics to heat up again.
Answer:
1
Step-by-step explanation:
(⅔)(¾) + ½
½ + ½
= 1
7.9168 x 10^8
790000000 + 1680000 = 791680000
