Which of these is a renewable resource?
a. coal
b. cotton
c. copper
d. petroleum

How are farmers that use no plow farming methods able to improve air quality for the people around the fram

Which evidence is most likely used to indicate the beginning of solar system formation? a. materials combined to form a mass. b. materials were pulled together by gravity. c. water condensed and collected to form oceans. d. different species of microorganisms lived on earth.

Based on the information in the graph, what can you conclude about humans in the world in general?