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: mechanical weathering is when rocks are broken down by mechanical means, Fact2: Water is a mechanical weathering force., Question: What  weathers rocks? (A) soil (B) streams (C) a delta (D) calcite (E) erosion (F) water (G) grass (H) the sun

Answer: F


Question: Fact1: a mutation in the sex cells of a parent can cause a new trait to appear in the parent 's offspring, Fact2: Animals that reproduce sexually produce sex cells, or gametes., Question: a mutation in the _ of a parent can cause a new trait to appear in the parent 's offspring (A) eggs (B) courtship (C) mitochondria (D) alleles (E) pollen (F) gametes (G) ATP (H) hormones

Answer: F


Question: Fact1: a greenhouse is used to protect plants from the cold, Fact2: Inside a greenhouse, it is the glass roof that creates the warmth., Question: What can protect plants from cold? (A) keratin (B) habitat (C) trees (D) heat (E) glass (F) Light (G) fibers (H) peat

Answer:
E