Asolar eclipse will last 1 to minutes. a) 3 b) 7 c) 15 d) 30 how many solar eclipses occur per year? a) 2 b) 4 c) 6 d) 8 is it safe to view a solar eclipse directly with your eyes? yes no only with sunglasses

Water molecules have a strong attraction to each other because of hydrogen bonding, allowing water to move against gravity up a plant's stem through capillary action. true false

How many moles of air are there in a human lung with a volume of 2.4 l at stp? explain your answer

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.