Tropical rainforests make up what percent of Africa's landmass?

a.

about 5%

c.

about 50%

b.

about 20%

d.

about 90%

What is the breaking of rocks due to constant expansion and contraction called? A. mechanical weathering B. chemical weathering C. deposition D. leaching

What two conditions must exist for an artesian well to form?

How does the UN impact do you

Which form of speciation is most rapid? Multiple Choice A. allopatric speciation on the mainland B. sympatric speciation via polyploidy C. sympatric speciation via character displacement D. allopatric speciation on island archipelagos

Aaron covered a pot of boiling water with a lid. The steam changed back to water as it hit the lid. What type of change (s) occurred

What is other name given to el nino

N 1991, what prompted a huge uprising in the Balkans causing ethnic squabbles and general tension?

Factors that contribute to people becoming refugees?

How does a large body of water, such as an ocean, influence climate

The number of elected officials who are African Americans a) has risen dramatically at all levels of government b) has grown at local and state levels, but not federal c) has been shrinking since 1990 d) Grew after 1964 until about 1990 and then