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").

[Q]: Fact1: Energy is passed up a food chain or web from lower to higher trophic levels., Fact2: Plants represent the first trophic level., Question: What passes energy up the food chain to adult vegans? (A) cows (B) animals (C) Batteries. (D) chickens (E) Power companies. (F) glucose (G) Humans. (H) Plants.
[A]: H


[Q]: Fact1: Some viruses can cause cancer., Fact2: Cancer is an example of a mutation in cells., Question: What can mutate cells? (A) Allergies (B) water (C) fruits (D) flow of electrons (E) vegetables (F) harmful substances (G) rays or beams (H) some viruses
[A]: H


[Q]: Fact1: fanning a fire increases the oxygen near the fire, Fact2: Air is used as a source of oxygen., Question: What does fanning a fire increase? (A) converting electricity to heat (B) Chemical energy (C) the air near the fire (D) activation energy (E) igniting fuel and oxidiser (F) flow of electrons (G) kinetic energy (H) Electrical energy
[A]:
C