Which of the following is TRUE? A)Carbon dioxide (CO2) in the atmosphere acts
like a blanket making the Earth warmer by
trapping the sun's heat.
B)Scientists are looking for ways to increase the
amount of CO2 entering the atmosphere.

Why does physical weathering speed up the processes of chemical weathering? a) physical weathering requires abundant water, as does chemical weathering. b) physical weathering produces fresh surfaces for chemical weathering to attack. c) chemical weathering can occur only on small surfaces, not large ones. d) chemical weathering requires salt, which is provided by salt wedging.

What part did glaciers play in forming the great lakes?

Find the equation of the line passing through the point (–1, 5) and perpendicular to the line 3x + y = 4.