Lbert remembers his teacher stressing that the arrow in a chemical equation does not mean equals. instead, he said the arrow meant

Which of the following would be an accurate picture of the earth during the summer time of the northern hemisphere?

What effect would average population growth have on land usage? a. urban use of land would rise to more than 30 percent of available land. b. industrial use of land would rise to more than 30 percent of available land. c. the percentage of available land used as cropland would stay the same. d. cropland would fall to about 10 percent of available land.

Why is it that 85.48 rounded to two significant figures is 85 and not 86?