Fact 1: Living things all require energy for survival. Fact 2: Plants are also the oldest living things. Given the two facts above, what requires energy for survival?
OPTIONS:
- gravity
- plants
- animals
- density
- Lobsters
- Joules
- Clams
- humans

Answer: plants

Fact 1: Biodiversity increases the productivity and stability of ecosystems. Fact 2: Ecotourism, on the other hand, can help to conserve biodiversity. Given the two facts above, what increases the stability of ecosystems?
OPTIONS:
- overpopulation
- water consumption
- loose soil
- Quality of life
- agriculture
- deforestation
- ecotourism
- trees

Answer: ecotourism

Fact 1: Killing microorganisms in food can be used to extend the shelf life of that food. Fact 2: Bacteria are microorganisms that exist everywhere. Given the two facts above, bacteria can be killed to extend the shelf life of what?
OPTIONS:
- milk
- rocks
- coffee
- edible
- food
- phytoplankton
- influenza
- tuna

Answer:
food