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").

Q: Fact1: soil is formed by weathering, Fact2: Over time, the slow processes of weathering and erosion can turn large rocks into sand., Question: What is formed by erosion processing large rocks? (A) cracks (B) crust (C) Newton (D) roots (E) pan (F) soil (G) potash (H) biome

A: F
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Q: Fact1: Active immunity results when an immune response to a pathogen produces memory cells., Fact2: Pathogens are germs that cause disease., Question: Active immunity is when an immune response occurs after a germ produces what? (A) harmful substances (B) bioaerosols (C) rapid expansion (D) Allergies (E) anemia (F) it needs them (G) Chemical energy (H) memory cells

A: H
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Q: Fact1: Energy enters ecosystems in the form of sunlight or chemical compounds., Fact2: An ecosystem includes the organisms and their habitat., Question: what does energy enter in the form of sunlight or chemical compounds? (A) Generating heat (B) volume (C) colors of the spectrum (D) organisms and their habitat (E) density (F) Transfers energy (G) gravity (H) it helps plants in growing

A:
D
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