According to some scientists, which is a cause of global warming? decrease of nitrous oxide
increase in cloud cover
decrease of methane gas
increase in carbon dioxide

Abird flies at a speed of 75 metres per second for 15 seconds, how far does the bird fly

Those who hope that land reform will end the problem of mass poverty and social inequality throughout middle and south america often cite as one of the causes of the problem. a. asian immigrants b. the indigenous population c. european systems of landholding d. the power of the roman catholic church

Afarmer who is grown corn for the past five years notices in the sixth year that the his harvest is significantly smaller, despite an increase in labor on the farm. the following year, the harvest continue to decline. which of the following explanations most plausibly accounts for the reduction in corn yield? a) soil degradation b) desalinization c) better irrigationd) terracing