Question 5 (Mandatory) (3 points)

What effect can a very large volcanic eruption have on earth's climate?
Question 5 options:

It will cool the earth's surface as more snow will fall with the presence of more condensation nuclei.

It will warm the earth's surface as more heat is trapped by the dust particles.

It will cool the earth's surface as radiation from the sun is blocked from entering the atmosphere.

It will warm the earth's surface as more lava is released by the volcanic eruption.
Question 6 (Mandatory) (3 points)

Which of these is NOT a form of air pollution?
Question 6 options:

carbon dioxide

ozone at ground level

ash from a volcano

VOCs from cleaning supplies
Question 7 (Mandatory) (3 points)

The term mass wasting describes
Question 7 options:

glacial movement of boulders.

islands sinking into the ocean.

the process by which an area becomes a desert.

down slope movement of a landslide.

affects the water bodies: excessive use of fertilizers causes eutrophication. the fertilizers which are used on plants affect the quality of land on which it is used, further causing erosion of soil. the fertilizers used on plants contain harmful chemical fumes which affect the environment.

answer and explanation;

volcanic rocks are igneous rocks which form from lava, molten rock which has been thrust out of a volcano onto the surface of a rocky body such as an asteroid, planet, or dwarf planet.  

plutonic rocks are igneous rocks which form from subterranean chambers of molten rock or magma. plutonic rocks make up the base of continental crust as well as oceanic crust. their slow rate of formation causes them to be coarse grained since there is plenty of time for large crystals to form before the magma solidifies into rock.

the textural difference is that plutonic rocks are more coarse grained than volcanic rocks. plutonic rocks are coarse grained while volcanic are fine grained ; glassey or fragmental. since fine and coarse are adjectives the decision as to whether a rock is fine or coarse grained is generally made on the bases of whether or not the individual crystals can be seen in most if the rock.