Very hot magma rises toward the surface because it is less dense. The magma becomes
as it cools, and it
back toward the
core.
form in the mantle where hot magma keeps rising
then cools and sinks again.
The movement of magma under the crust applies
plates
to tectonic
Rising hot magma pushes up on the crust, causing it to break and allowing
to form
happens where magma moving sideways and lava
forming new crust pushes plates in opposite directions.
Oceanic trenches form where denser oceanic crust is pushed under lighter
crust. The subducted plate begins to melt as it moves
Into the mantie.
HELP THIS IS DUE TODAY

Prior to the development of dna fingerprinting, blood type could be used to determine possible parentage. although it might prove someone was not a parent, it could not show if someone was positively the parent, only that he or she might be a parent. which of the following is a true statement that can be made about parentage based on blood typing?

1. emigration the movement of people from one place to another 2. immigration a situation in which resources are being used up at a faster rate than they can be replenished 3. migration the leaving of one's homeland to settle in a new place 4. overpopulation the movement of people to a new country 5. sustainable development a situation in which the birth rate is not sufficient to replace the existing population 6. underpopulation the ability to meet current needs without reducing the ability to meet future needs 7. unsustainable development the increase in the population of a city 8. urbanization a situation in which the number of people exceeds the available natural resources in an area

Aboy jumps into a cold swimming pool and his body tempature goes down hus muscles ,blood vessels