Fact 1: Carbon may be stored in sedimentary rock for millions of years. Fact 2: Limestone is a type of sedimentary rock. Given the two facts above, where might carbon be stored for million of years?
OPTIONS:
- In sediment
- stomach
- limestone
- refrigerator
- weathering
- loose dirt
- Earth
- body water

Answer: limestone

Fact 1: Head hair is especially important in preventing heat loss from the body. Fact 2: Hats The number area for heat loss on the body is the head. Given the two facts above, what prevent heat loss from the body after losing hair?
OPTIONS:
- gloves
- skin
- shoes
- hats
- sweat
- cocoa
- Masks
- fur

Answer: hats

Fact 1: All chemical reactions require activation energy to get started. Fact 2: Catalysts lower the activation energy for reactions. Given the two facts above, catalysts lower the input required for chemical reactions to what?
OPTIONS:
- temperature
- It decreases
- adding heat
- Under 32 degrees
- Decibels
- reduce
- the environment
- get started

Answer:
get started