Over the past 60 years, the level of carbon dioxide in the atmosphere has been continually increasing. many scientists hypothesize that this increase has led to an imbalance in the carbon cycle and a climatic trend known as global warming.

in which of the following ways could humans the carbon cycle return to normal?
a.
cut down trees and other large plants that depend on carbon dioxide
b.
cap volcanoes so that they do not release more carbon dioxide
c.
pump nitrogen and oxygen into the air to rebalance the atmosphere
d.
reduce the amount of fossil fuels they combust

What kind of sentence is the following example? before he started tp watch tv, he made sure that he had all of his favorite snacks (ice cream and chips), and he sure to get all of his homework finished.

Read the excerpt from the common sense of bicycling: bicycling for ladies. the bicycle is capable of such high speed that there is a strong temptation to ride so fast as to cause over exertion or excessive perspiration. on the other hand some people ride too slow, causing a zigzag and uncertain movement. while exercising reasonable caution, be a fearless rider. when you come to a steep hill, if the road is clear, let it go as fast as it will. if you rid yourself of that ghost of fear, coasting is one of the greatest delights of cycling. which is the best paraphrase of the text?

Odyssey’s greatest fear is that lotus will make his