Problem:OPTIONS:
- agriculture
- mouth of rivers
- during the day
- the environment
- heat produced
- at or near the margins
- Small intestine
- Converting waste.

Fact 1: Digestion is the process of breaking down food into components the body can absorb. Fact 2: Food is digested and absorbed in the small intestine. Given the two facts above, where does digestion happen?
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A: Small intestine

Problem:OPTIONS:
- flooding
- symptoms
- rainbow
- erosion
- Pollution
- toxins
- imbalanced
- disease

Fact 1: Sunlight and rain can cause a rainbow. Fact 2: Rain water contains small particulates and acid. Given the two facts above, sunlight and water containing small particulates and acid can cause what?
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A: rainbow

Problem:OPTIONS:
- balanced forces
- kinetic energy
- a single force
- competition
- unbalanced forces
- heat energy
- randomized forces
- solid, liquid, gas

Fact 1: If two balanced forces act on an object in opposite directions then that object will remain stationary. Fact 2: Opposites also hold each other in balance and exert mutual control. Given the two facts above, what is likely to exert mutually on an object, making the object remain stationary?
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A: balanced forces

Problem:OPTIONS:
- magma
- loose soil
- loose dirt
- precipitation
- pumice
- limestone
- wind and rain
- andesite

Fact 1: Flowing water can slowly dissolve carbon in sedimentary rock. Fact 2: Limestone is a type of sedimentary rock. Given the two facts above, flowing water from a mountain can dissolve carbon in what kind of rock?
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A:
limestone