Fact 1: All life relies on a relatively narrow range of pH, or acidity. Fact 2: All organisms have life cycles. Given the two facts above, what relies on a relatively narrow range of acidity?
OPTIONS:
- organisms
- carbon
- animals
- hydrogen
- density
- trees
- Most plants
- barnacles

Answer: organisms

Fact 1: Animals are a kingdom of multicellular eukaryotes. Fact 2: All plants are eukaryotes. Given the two facts above, what are plants and animals?
OPTIONS:
- absorb light energy
- bacteria
- important habitats
- produce light
- prokaryotes
- multicellular
- insects
- air

Answer: multicellular

Fact 1: Smoking causes direct damage to the lungs. Fact 2: When lung damage is experienced, frequently the total capacity of the respiratory system is reduced. Given the two facts above, what can reduce respiratory system capacity?
OPTIONS:
- Breathing
- Smoking
- influenza
- bacteria
- Pollution
- Exercising
- Pesticides
- Singing

Answer:
Smoking