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").
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Question: Fact1: rocks interacting with wind over long periods of time causes weathering, Fact2: On Earth, rocks are weathered by wind and water, creating soil and sand., Question: What causes rocks to weather? (A) seasons (B) force (C) erosion (D) storms (E) water (F) heat (G) lightning (H) gas

Answer: E


Question: Fact1: planting trees has a positive impact on an ecosystem, Fact2: An ecosystem contains many habitats., Question: doing what with trees has a positive impact on habitats (A) making tables (B) chopping down (C) planting (D) watershed (E) earth (F) bloom time (G) growth (H) timbering

Answer: C


Question: Fact1: Evaporation of sweat uses energy, and the energy comes from body heat., Fact2: Energy is the body's fuel., Question: What powers sweat? (A) heat produced (B) The body's fuel (C) a gas in the air (D) hydration (E) When the water is hot (F) air cools (G) matter vibrating (H) Cooling vapors

Answer:
B