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: information in an organism 's chromosomes cause genetic traits to be passed down to that organism 's offspring, Fact2: DNA, which contains our genetic code, is the basic building block of chromosomes., Question: DNA causes what to inherit genetic traits? (A) offspring (B) some mammals (C) ancestors (D) Nematoda (E) heterotrophs (F) animals (G) minerals (H) grandparents

Answer: A


Question: Fact1: volcanic ash in the atmosphere decreases the temperature by blocking the sun, Fact2: Ash clouds are a particular problem for aircraft., Question: What are particular problems for aircraft in the atmosphere? (A) transportation (B) clog airways (C) extremely low humidity (D) volcanic clouds (E) feedback mechanisms (F) negative feedback (G) gas spreads in the air (H) very complex

Answer: D


Question: Fact1: Carbon monoxide is a gas produced by furnaces and other devices that burn fuel., Fact2: Gas furnaces heat homes for up to 20 years., Question: what produces carbon monoxide? (A) h2o (B) burning coal (C) hydrogen (D) freezing (E) heating homes (F) chlorofluorocarbons (G) cigarettes (H) gasoline

Answer:
E