Question

remotely operated vehicles. 2 nw rota-1 is far below the ocean’s photic zone where sunlight drives photosynthesis; 3 nevertheless, bacteria supporting a unique food web have adapted to this perpetually dark environment. the bacteria have evolved to use hydrogen sulfide instead of sunlight for the energy that drives their metabolic processes, and hydrothermal venting is the source of the chemical soup necessary to support 4 him or her. seawater seeping into fissures in the ocean floor is heated by underlying magma, and the heat drives chemical reactions that remove oxygen, sulfates, 5 and remove other chemicals from the water. once the superheated water (up to 750°f) rises through vents in the ocean floor, additional reactions cause minerals and compounds to precipitate onto the seafloor, where bacteria feed on them. 2 to make the paragraph most logical, sentence 5 should be placed a) where it is now. b) after sentence 1. c) after sentence 2. d) after sentence 3. 3 a) no change b) afterward. c) furthermore. d) similarly. 4 a) no change b) one. c) them. d) it. 5 a) no change b) it also removes c) also removing d) and

Explanation:

Question 2

To determine the correct placement of sentence 5, we analyze the logical flow. Sentence 1 introduces NW Rota - 1 being below the photic zone. Sentence 2 (not fully shown but contextually, sentence 5 likely relates to the hydrothermal venting process). Sentence 3 talks about bacteria adapting. The process of seawater seeping, heating, and chemical reactions (sentence 5's content) should follow the introduction of the environment (sentence 1 - 2) and before the bacteria's feeding (later). After sentence 2 makes the most sense as it connects the environmental setup to the hydrothermal process.

We analyze the transition word. The original "nevertheless" implies a contrast, but the sentence is showing a continuation of how bacteria adapt (using hydrogen sulfide) and the source of the chemical soup. "Furthermore" is used to add more information, which fits here. "Afterward" is about time, "similarly" about comparison, neither fit.

We look at the pronoun reference. The "chemical soup" is singular, so we need a singular pronoun. "him or her" is wrong (refers to people), "one" is not appropriate, "them" is plural. "it" correctly refers to the singular "chemical soup".

Answer:

C) after sentence 2.

Question 3