Why did early settlements first develop along rivers? people could mine for copper and gold. people could use tools to dig ditches. plants and animals were more abundant. floods provided water for crops?

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

Select an environmental issue faced by the countries of this region ( central america, south america, and the caribbean) . write a 150-word essay describing the problems presented by each issue and possible solutions to these problems.

Which of the following is an important principle of how water moves through a watershed? a. most freshwater is in the form of ice. b. small streams flow into larger streams. c. each watershed contains only a single source of water. d. clouds are formed through evaporation and then condensation.