Question: Fact 1: Trees have woody stems covered with bark. Fact 2: On the outside is a protective skin of bark made mainly of cork. Given the two facts above, trees have woody stems covered with what?
OPTIONS:
- heat energy
- thin skin
- protective skin
- skinny cells
- white skin
- Chlorophyll
- Organic compounds
- looseness
Answer: protective skin

input with options: Fact 1: If the amount of available food and water decreases in an environment then animals may leave that environment to find food and water. Fact 2: Food, water and air are the essentials of life on earth. Given the two facts above, what can decrease in an environment, and may cause animals to leave?
OPTIONS:
- essentials of life
- competition
- wind speed
- living things
- single-celled organisms
- deforestation
- biodiversity
- rock content
output: essentials of life

Q: Fact 1: Energy is passed up a food chain or web from lower to higher trophic levels. Fact 2: An example of chemical energy is food nutrients. Given the two facts above, _ are passed from lower to higher trophic levels?

OPTIONS:
- fossil fuels
- rays or beams
- nutrients
- environment
- animals
- heat produced
- Most plants
- Light

A: nutrients

input: OPTIONS:
- Man
- invertebrates
- humans
- insects
- toads
- birds
- plants
- bacteria Now, answer this question: Fact 1: Vertebrates are all chordates that have a backbone. Fact 2: Birds are warm-blooded vertebrates. Given the two facts above, what has a backbone?
A:
output: birds

Fact 1: Sweat wets the skin, and when it evaporates, it cools the body. Fact 2: Sweat is made of salt and water. Given the two facts above, an overheated body can use water for:?

OPTIONS:
- metabolic reaction
- dehydrating
- raising their temperature
- heat produced
- liquid
- watering plants
- evaporative cooling
- retaining heat

Answer: evaporative cooling

Q: Fact 1: Air pollution harms the respiratory and circulatory systems. Fact 2: Smoking is a form of air pollution. Given the two facts above, what harms the respiratory and circulatory systems?

OPTIONS:
- Cars
- oxygen
- smoking
- vehicles
- emissions
- gasoline
- fresh air
- lungs

A:
smoking