Fact 1: The movement of tectonic plates causes volcanic eruptions. Fact 2: Volcanic eruptions can cause short-term cooling of the Earth's climate. Given the two facts above, what can cause a short-term cooling of the Earth's climate?

OPTIONS:
- electromagnetic energy
- a hemisphere is tilted away from the sun
- The movement of tectonic plates.
- Greenhouse gases
- fissures of hot, acidic water
- energy of moving objects
- wind and erosion
- exposure to cold

Answer: The movement of tectonic plates.

Fact 1: Glucose is used for energy by the cells of most organisms. Fact 2: Human muscle cells produce energy for contraction from glucose. Given the two facts above, where do humans receive energy from?

OPTIONS:
- Heat
- The Sun
- sunlight
- Their brain
- Water
- retina
- ovaries
- Glucose

Answer: Glucose

Fact 1: Photosynthesis means producers convert from carbon dioxide, water, and solar energy into carbohydrates for themselves. Fact 2: Photosynthesis and cellular respiration are life-sustaining plant processes. Given the two facts above, what plant processes convert carbon dioxide, water and solar energy into carbohydrates?

OPTIONS:
- water types
- life-sustaining
- chlorofluorocarbons
- food tools
- planting pots
- circulatory systems
- one celled organisms
- peachleaf willow

Answer: life-sustaining

Fact 1: Evolution is a change in the characteristics of living things over time. Fact 2: An organism is a living thing. Given the two facts above, evolution is the change in characteristics of what over time?

OPTIONS:
- gravity
- animals
- vegetation
- h2o
- density
- organisms
- alleles
- humans

Answer:
organisms