Which of the following is a way that magma can interact with earth's crust?

question 2 options:

a)

magma can enter into newly formed fissures in earth’s crust.

b)

magma can cause blocks of rock to break off and sink into the magma and melt.

c)

magma can melt the rock into which it intrudes.

d)

a and c only

e)

a, b and c

significant amounts of nitrogen oxides, carbon monoxide, and other pollution

explanation:

passenger vehicles are a major pollution contributor, producing significant amounts of nitrogen oxides, carbon monoxide, and other pollution. in 2013, transportation contributed more than half of the carbon monoxide and nitrogen oxides, and almost a quarter of the hydrocarbons emitted into our air.

because of

frogs. the lower the ph the higher the acid content. frogs have the highest tolerance in this scenario.

step 1: nitrogen fixation- conversion of atmospheric no₂ into forms useful to plants by lightning, bacteria, and cyanobacteria.

step 2: nitrification-process of converting ammonia to nitrite or nitrate.

step 3: assimilation-plant roots absorb new form of nitrogen.

step 4: ammonification-conversion of organic nitrogen to ammonia by bacteria involved in decomposition.

step 5: denitrification-bacteria turns the decomposed matter back into n₂o, which is released into atmosphere; repeat cycle.