When oceanic crust is subducted beneath continental crust, partial melting can occur. Which of the following best explains why the resultant magma rises through the crust toward the surface

Magma is less bouyant than the other rocks on the crust.

Explanation:

Magma is a molten or semi liquid form of a rock. When magma cools down it forms igneous rock.

Magma is its molten or semi liquid state has it has lesser bouyancy ( less dense) compared to other rocks percent on the crust.

It is this difference in the density when it is large enough as well as an increased pressure that causes magma to rise through the crust towards the surface.

places of higher salinity. there are parts of the ocean where hardly any rain falls but warm dry winds cause lots of evaporation. this evaporation removes water – when water vapour rises into the atmosphere, it leaves the salt behind, so the salinity of the seawater increases. this causes the seawater to become denser.

d. stage 4

explanation:

the existence of some kind of demographic transition is widely accepted in the social sciences because of the well-established historical correlation linking dropping fertility to social and economic development.[1] scholars debate whether industrialization and higher incomes lead to lower population, or whether lower populations lead to industrialization and higher incomes. scholars also debate to what extent various proposed and sometimes inter-related factors such as higher per capita income,lower mortality, old-age security, and rise of demand for human capital are involved.[2]