Modern-day intensive crop production means the application of greater and greater amounts of nitrogen fertilizers. This is turn
means more nitrogen in the atmosphere, which then leads to
plant death
global warming
increased acid rain
the greenhouse effect
nffort called the greenhouse effect is

answer: what was the us involvement in ww1? although the u.s. tried to remain neutral when ww1 broke out, it finally joined on april 6, 1917 after declaring war on germany. the reason for america to become involved in ww1 was germany's unrestricted submarine warfare, which had already sunk several american merchant ships.

explanation:

no statements but ok.

the statement that best describes the idea of manifest destiny that was used in the 19th century would be that "it was fate that the united states would continue to  expand westward," since people thought the us was "destined" to do so. 

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comparison is that they aren't nationalistic. a dif is that sds is government approved movemnet while yaf isnt \

it isnt that hard

explanation: