In this task, you are given two facts, and a multiple-choice question. Based on the given facts, answer the question with index of the correct option (e.g, "A").

Fact1: Soil can be depleted of nutrients., Fact2: Dirt is really misplaced soil., Question: When gardening what can be depleted of nutrients? (A) fertilizer (B) bacteria (C) the plant (D) coal (E) pine (F) the dirt (G) Acids (H) water
F

Fact1: Organisms cluster around hydrothermal vents in the ocean floor., Fact2: To survive, some organisms living near hydrothermal vents have formed close associations., Question: How is survival ensured around hydrothermal vents? (A) heat produced (B) Eating a lot (C) Reproducing quickly (D) biological diversity (E) vegetation (F) Being in a cluster (G) Staying far apart (H) hydrate their cells
F

Fact1: volcanic ash in the atmosphere decreases the temperature by blocking the sun, Fact2: Atmosphere is the air around an object in space., Question: How does volcanic ash in the air around the earth decrease the temperature? (A) mild heating process (B) blocking the sun (C) magnifying the light (D) heated by the sun (E) friction (F) after the snow melts (G) leaving the atmosphere (H) solidifying in the air

B