8. thermohaline currents are density-driven cur a) are part of the conveyer-belt circulation b) bring oxygen-rich water to the deep ocean c) deposit nutrient-rich water on the surface d) are vertical deep currents e) are all of the answers above 9. upwelling water is downwelling water is a) nutrient rich and oxygen poor; nutrient poor and oxygen rich. b) nutrient poor and oxygen poor; nutrient rich and oxygen rich. c) nutrient poor and oxygen rich; nutrient rich and oxygen poor. d) nutrient rich and oxygen rich; nutrient poor and oxygen poor

Astudent conducts an experiment to see how music affects plant growth. the student obtains four identical plants. each one is potted in the same type of soil and receives the same amount of sunlight and water each day. plant a listens to classical music for three hours each day. plant b listens to rock music for three hours each day. plant c listens to country music for three hours each day. plant d does not listen to any music at all. 2. based on the experiment in the scenario, which visual aid would be most in showing the change in the plants' heights over time? a. a pie chart b. a line graph c. a timeline d. a bar graph

Name one type of data that h-r diagrams do not show.

Where was oil production at its highest in the 1980s and still remains important to the russian economy? central asia the ural mountains russian siberia the caucasus region