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: the looseness of soil has a positive impact on a plant 's roots' growth in that soil, Fact2: Roots gather plant nutrients., Question: What does looseness of soil have an impact on? (A) age of the plant (B) viability of plant (C) important habitats (D) bloom time (E) climate (F) water retention (G) Plants growth (H) genetic diversity

A: G
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Q: Fact1: Mutualism is a symbiotic relationship in which both species benefit., Fact2: Coral and alga have a symbiotic relationship., Question: The interaction between coral and alga is an example of _. (A) Synchronous (B) communication (C) competition (D) coelenterates (E) predation (F) friction (G) damaging (H) mutualism

A:
H
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