Choose all the answers that apply.
which of the following increases erosion?
clearing forests
leaving fields unplanted
careless farming
contour plowing
crop rotation
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contour plowing occurs when:
farmers plow fields in horizontal rows
farmers stop plowing fields
farmers plow fields around hills
farmers plow fields around brooks and steams

How did the research presented in the article affect scientists' understanding of the evolution of eukaryotes

Darrel conducted an experiment with the following procedure: fill two cups with ice water. place an uninflated balloon snuggly onto your left index finger. blow a little air into an identical balloon, and place it onto your right index finger. place both fingers into the cups of ice water. darrel noticed that his right finger felt warmer in the ice water than did his left finger. which of the following does the experiment show? a. air is a good radiator of heat. b. air is a good insulator of heat. c. air is a good conductor of heat. d. air is a good convector of heat.

Which of the organisms listed below performs nitrogen fixation? a. legumes b. plants c. bacteria d. fungi