Q: You are presented with the quiz "what can be used to kill existing microorganisms in food?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "irradiating food can be used to kill existing microorganisms in the food" and "irradiation causes chemical changes". So, what's the best answer to the question? | OPTIONS:
- chemical changes
- Dehydration
- deoxyribonucleic acid
- bacteria
- an electron microscope
- hydration
- electromagnetic energy
- single-celled organisms
A: chemical changes

Q: You are presented with the quiz "What is one instinct that animals use to stay alive?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "an animal requires warmth for survival" and "animals act through their instincts for survival". So, what's the best answer to the question? | OPTIONS:
- motility
- Warmth
- stability
- Cold
- Territory
- toughness
- Peace
- hormones
A: Warmth

Q: You are presented with the quiz "What do igneous rocks form into when heated?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "melting is when solids are heated above their melting point" and "igneous rocks form when rocks are heated to the melting point which forms magma". So, what's the best answer to the question? | OPTIONS:
- magma
- matter
- crust
- soils
- rocks
- alveoli
- coal
- mines
A: magma

Q: You are presented with the quiz "Some viruses do not affect the host and live in what kind of state in the body?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "some viruses live in a dormant state inside the body" and "when inactive or dormant, Dendrobiums require little or no fertilizer". So, what's the best answer to the question? | OPTIONS:
- inactive
- devastating
- recovery
- negative
- hyperactive
- sleep
- excited
- cold
A: inactive