SAT Practice HONORS 10/16

Seawater seeping into fissures in the ocean floor is heated by underlying magma, and the heat drives chemical reactions that remove oxygen, sulfates, and remove other chemicals from the water.

• NO CHANGE

• it also removes

• also removing

• and

Loihi shrimp—originally thought to exist only around an undersea volcano near Hawaii, survive by using tiny, shear-like claws to harvest rapidly growing bacterial filaments covering rocks near NW Rota-1’s hydrothermal vents.

• NO CHANGE

• Hawaii;

• Hawaii--

• Hawaii

Loihi shrimp—originally thought to exist only around an undersea volcano near Hawaii, survive by using tiny, shear-like claws to harvest rapidly growing bacterial filaments covering rocks near NW Rota-1’s hydrothermal vents. The Loihi shrimp spend most of their time grazing on the bacteria and evading another, previously unknown, species of shrimp. Shrimp of that species also graze on bacterial filaments as juveniles, resulting from their ability to cope with the noxious environment around the volcano. They feed on the Loihi shrimp and other organisms that are overcome by the toxic plumes of volcanic gas and ash.

Which choice most effectively sets up the information in the next sentence?

• NO CHANGE

• but their adaptations are not yet fully understood by the scientific community.

• thriving in an unusual ecosystem that also includes crabs, limpets, and barnacles.

• but as adults, their claws are large enough for the shrimp to be predators.