Problem:OPTIONS:
- Fly swatter
- Active immunity
- Exfoliation
- a cuticle
- food
- bugs
- rays or beams
- resistance

Fact 1: Active immunity results when an immune response to a pathogen produces memory cells. Fact 2: Pathogens are simply a variety of diseases which kill insects. Given the two facts above, what prevents insects from being killed?
****
A: Active immunity

Fact 1: Landfills have a negative impact on the environment. Fact 2: Solid waste is stored in landfills. Given the two facts above, what has a negative impact on the environment?
OPTIONS:
- cigarettes
- animals
- deforestation
- rain
- wind
- Pesticides
- Pollution
- solid waste
solid waste

Fact 1: Biofuel is used to produce electricity by burning. Fact 2: Biofuels can reduce the greenhouse effect. Given the two facts above, what reduces greenhouse effect?
OPTIONS:
- Fully cooking the oysters
- Something made from fermented ricce
- fuel
- reusing materials
- gas
- some electricity production
- evaporative cooling
- cells

Answer: some electricity production

Question: Fact 1: Energy enters ecosystems in the form of sunlight or chemical compounds. Fact 2: Sunlight is energy released from fusion reactions in the sun. Given the two facts above, what do ecosystems use as energy?
OPTIONS:
- Nutrients
- chemicals
- heat
- wind
- trees
- food
- glucose
- fusion
Answer: fusion

input with options: Fact 1: All animals are heterotrophs. Fact 2: Proteins are an essential nutrient for heterotrophs . Given the two facts above, _ are an essential nutrient for animals.?
OPTIONS:
- Energy
- Chemicals
- trees
- potatoes
- Acids
- allow growth
- store
- Proteins
output: Proteins

Problem: OPTIONS:
- common traits
- Plant reproduction
- advantageous systems
- undesirable traits
- Animal survival
- competition
- mysterious sytems
- Earth revolving around the sun
Q: Fact 1: Evolution occurs by a process called natural selection. Fact 2: Natural selection only selects functionally advantageous systems. Given the two facts above, what is usually chosen in evolution?
Answer:
advantageous systems