1) What chemical compound is used by the bacteria to provide energy to the ecosystem at hydrothermal vents?

1) What chemical compound is used by the bacteria to provide energy to the ecosystem at hydrothermal vents?

A. Carbon Dioxide

B. Hydrogen Sulfide

C. Sulfur Dioxide

D. Hydrogen Chloride

E. None of the above 

2) What device used in the SOFeX experiment is used to map distribution of nutrient levels in water?

A. Particle interceptor trap

B. SeaSOAR

C. CTD

D. Deep Rover

E. None of the above 

3) Why did the scientists in SOFeX want to measure the amount of sinking carbon particles below the phytoplankton bloom?

a. to measure amount of domoic acid produced by the bloom

b. to measure the amount of carbon that sank into the deep water

c. to measure the amount of iron exported to the deep water

d. to measure the impact of the phytoplankton bloom on the fish stock

e. to measure the impact of the bloom on the concentration of dissolved oxygen 

4) What were the main goals of the oceanographers in the SOFeX project?

a. fertilize the ocean with iron

b. study its effects on the ecosystem

c. see how it influences the carbon cycle

d. to explore if our oceans can be manipulated to counter global warming e. all of the above