Fact 1: Cell division often causes growth. Fact 2: Mitosis is cell division. Given the two facts above, what causes growth sometimes?

OPTIONS:
- collagen
- tapeworms
- Annelids
- Mitosis
- bushes
- hormones
- pituitary
- Earthworms

Answer: Mitosis

Fact 1: Thyroid hormones increase the rate of metabolism in cells throughout the body. Fact 2: Cell metabolism is a heat production. Given the two facts above, thyroid hormones increase the rate of what in cells?

OPTIONS:
- kinetic energy
- heat production
- heat sources
- Chemical energy
- heat energy
- heat improvement
- energy usage
- heat molecules

Answer: heat production

Fact 1: Macroevolution occurs over geologic time above the level of the species. Fact 2: Speciation events are thus examples of macroevolution. Given the two facts above, what occur over geologic time above the level of the species?

OPTIONS:
- water cycle
- fossils
- rapid expansion
- viruses
- Temperature changing
- tectonic plates coliding
- speciation events
- Earth orbiting the Sun

Answer: speciation events

Fact 1: Changes in the pH of soil can cause plants to die. Fact 2: Animals and humans eat plants for their nutrients. Given the two facts above, what can changes in soil pH do?

OPTIONS:
- Damages them
- It decreases
- death and devastation
- Increase human wealth
- Rob humans of nutrients
- Cause humans happiness
- Destroy crops
- Give humans pleasure

Answer:
Rob humans of nutrients