Which historical era contributed to increased air pollution?
a. the industrial revolution
b. the age of exploration
c. the agricultural revolution
d. world war i

they are the executive, (president and about 5,000,000 workers) legislative (senate and house of representatives) and judicial (supreme court and lower courts). the president of the united states administers the executive branch of our government.

i think its either b or c

explanation:

i think the answer is c, rivers.

explanation:

sometimes, borders fall along natural boundaries like rivers or mountain ranges. for example, the boundary between france and spain follows the crest of the pyrenees mountains. for part of its length, the boundary between the united states and mexico follows a river called the rio grande. the borders of four countries divide africa’s lake chad: niger, chad, cameroon, and nigeria.

hola,

i hate my life too. (like jayfeather hates his blindness x3)