Problem:OPTIONS:
- toenails
- warmth
- skin
- nails
- wings
- fingers
- fur
- hair

Fact 1: Insulated material can be used for keeping warm. Fact 2: Hair is a natural insulator whether the it is warm or cool. Given the two facts above, what can keep you warm?
****
A: hair

Problem:OPTIONS:
- Continents drifting
- mechanical waves
- Photosynthesis
- Sand Casting
- movement of tectonic plates
- Cellular Respiration
- evaporation
- Mechanical Weathering

Fact 1: The surface of a beach is formed by mechanical weathering. Fact 2: Most beaches are of white coral sand. Given the two facts above, sand can be formed by which process?
****
A: Mechanical Weathering

Problem:OPTIONS:
- Pesticides
- pollutants
- bones
- toxins
- fossil fuels
- calories
- contamination
- blood

Fact 1: Eating something that contains pollutants has a negative impact on an organism 's survival. Fact 2: Organisms or living beings are literally things that are alive. Given the two facts above, eating something that contains what can have a negative impact on a living being's health?
****
A: pollutants

Problem:OPTIONS:
- sugar
- heat
- food
- water
- Light
- Energy
- salt
- carbon

Fact 1: Glucose is used for energy by the cells of most organisms. Fact 2: Blood Sugar Glucose is sugar. Given the two facts above, what is used as energy by most of the organisms on Earth?
****
A:
sugar