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: Carbon cycles quickly between organisms and the atmosphere., Fact2: Water, carbon dioxide, and nitrogen are all needed by living things., Question: What is needed by living things? (A) hate (B) sunlight (C) Chemical energy (D) pain (E) love (F) hydration (G) The atmosphere (H) Energy.
G

Fact1: if gas is heated then that gas will expand, Fact2: If more space between 2 galaxies more space to expand so it moves away faster., Question: When gas is heated, it takes up more: (A) solutes (B) plasma (C) fluidity (D) energy (E) space (F) viscosity (G) matter (H) Energy.
E

Fact1: blowing air into a whistle causes air to vibrate inside the whistle, Fact2: Air, too, contains oxygen., Question: If you blow oxygen inside of a whistle, what will vibrate inside of the whistle? (A) an object (B) friction (C) energy (D) waves (E) heat (F) oxygen (G) a chime (H) sound

F