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 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
F

Fact1: Behaviors that improve fitness increase through natural selection., Fact2: Adaptation traits contribute to individual fitness and to the evolution of animal genetic resources., Question: The evolution of animal genetic resources can be impacted by: (A) extinction (B) Mars (C) competition (D) Darwin (E) agriculture (F) behavior (G) environment (H) Galapagos Islands
F

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

H