Michael = 9(28) = $252
David = 8(40) = $320
$320 + $252 = $572
They earn $572 combined; one week
Answer:
volcanoes are formed by eruptions of lava and ash when magma rises through cracks or weak spots
Answer:
The Great Plains had rivers which allowed various Native American tribes to camp along these rivers while they were following the buffalo. So again, the geography of the area provided this availability of food and places to stay and feed and water their horses.
Because the earth is made of rock. therefore, rock doesn’t grow. However, tectonic plates within the earths crust shift that cause earthquakes and tsunamis.
