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: global warming is when worldwide temperature increases, Fact2: Global warming is caused by carbon dioxide trapped in the atmosphere., Question: What does carbon dioxide cause? (A) skateboards (B) Greenhouse gases (C) Worldwide temperature increase (D) major threat to health (E) direct damage to the lungs (F) running (G) a lot of human deaths (H) Temperature decrease
C

Fact1: nuclear reactions in stars causes stars to produce light, Fact2: An intense bright light produces a glare., Question: What in stars cause stars to produce bright glares (A) energy of moving objects (B) nuclear reactions (C) direct energy (D) shining suns (E) bright activity (F) Chemical energy (G) moving moons (H) heat energy
B

Fact1: Biomass is the total mass of organisms at a trophic level., Fact2: Trophic level refers to the organisms position in the food chain., Question: What is a biomass' position in the food chain called? (A) ecosystem (B) more abundant (C) action (D) food swamp (E) Chemical energy (F) Trophic level (G) permineralization (H) It decreases
F