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: 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: Tunicates reproduce sexually., Fact2: Bulbs are classifies as tunicate or non-tunicate., Question: How many ways can a bulb reproduce? (A) LEDs (B) Two (C) Many (D) wind (E) well (F) 12 (G) bent (H) tube

Answer: B


Question: Fact1: Organisms that live in marine biomes must be adapted to the salt in the water., Fact2: Some familiar examples of biomes include tundra, desert, chaparral, and open ocean., Question: Organisms that live in the ocean are adapted to (A) purified water (B) the environment (C) Absorb light (D) air (E) survival (F) salt water (G) murky water (H) produce light

Answer:
F