1)which is not a major factor resulting in pollution from increased economic activity in china?
a)more people are driving motor vehicles
.b)more factories are burning coal.
c)moore farmlands are being cleared.
d) more bycicles are being used for traveling purposes.

2) economic trends in chinas gross domestic product over a 50-year period can be best described as (1point)
a) a gradual but steady decline in economic activity.
b)relatively stable with low levels of economic activity from the 1950's to the late 1990s.
c)a gradual steady increase in economic activity.
d)intially stable with darastic increase in economic activity staring in the late 1980s.

1)which is not a major factor resulting in pollution from increased economic activity in china?

D) more bycicles are being used for traveling purposes.

2) Economic trends in chinas Gross Domestic Product over a 50-Year period can be best described as (1point)

B)relatively stable with low levels of economic activity from the 1950's to the late 1990s. 

Mantle convection is the process that drives plate tectonics. the theory of plate tectonics states that the crust is divided into plates that float on the semi molten mantle below. the circular motion of the magma as it slowly rises and falls or move though convection cells drags the plates along causing them to move. the heat source in the lamp would represent the earth's core. the core is the source of energy that drives convection in the mantle. the lava represents molten magma under the earth's surface. if the lava lamp had floating pieces they would move as the circular motion of the lava in the lamp as it rises and falls would move them along the surface. these floating pieces would represent pieces of the earth's crust. 

Answerland;