What primary benefit do fertilizers have on farmland?
A. Plants become more tolerant of droughts.
B. Fertilizers decrease the number of weeds in the field.
Fertilizers increase the amount of water available for plants to use.
D. Fertilizers return nutrients to the soil that are taken out by plants.

Which were the most important issues during the presidential election of 2008? economic downturn and environmental protection two overseas wars and economic downturn two overseas wars and campaign spending environmental protection and campaign spending

Which of the following is an example of the pull factor known as economic migration? a. better educational opportunities pulling people towards a new country b. mexican laborers entering the us to work in agricultural jobs c. joining family members that are already in a new country d. crop failures driving people away from their country i am unsure on this question, i was thinking b? but i could be wrong.

The devahrime system was created in order to : a. promote the expansion of sikhism in the ottoman empire b. illuminate the influence of christianity in the ottoman empire c. create trade relationships between the ottoman and mughal empires d. provide the ottoman empire with trained professional soldiers