The Columbian Exchange is an example of ?
HELP FAST PLS

Which features do all new rocks formed near oceanic ridge share? pillow shaped stripes pattern provide evidence to seafloor spreading made from molten material iron oriented in same direction

What type of aid does nigeria receive? short term, tied, voluntary, bilateral, multilateral or long-term?

Rectangle qrst is shown. angle qrt is congruent to angle str, and angle str is complementary to angle qtr. which statement is true about angles qrt and qtr? they are congruent. they are complementary. they are supplementary. they are right angle