The greatest growth of human population today is occurring in

a. hunter gathering societies

b. industrial societies

c. tribel societies

d. developing nations

Look at the figure above. which atmospheric layer has around 80 percent of the mass of the earth's atmosphere? (hint: it's where the clouds seen on earth are formed.) a. exosphere b. troposphere c. stratosphere d. thermosphere

Explain why in any given geographical region, women tend to have lighter skins( by 3-4% on average) than men?

Read the sentence. “yesterday we arrived late for the outdoor concert in the city gardens.” which words in the sentence are adverbs? a. late; city b. yesterday; outdoor c. yesterday; late d. outdoor; city