Problem:OPTIONS:
- glucose
- Gold
- Energy
- food
- Polonium
- Nitrogen
- Helium
- heat energy

Fact 1: Nitrogen is found in proteins, nucleic acids, and chlorophyll. Fact 2: Most molecules are proteins or nucleic acids. Given the two facts above, _ is found in most molecules.?
****
A: Nitrogen

Fact 1: Rain causes erosion. Fact 2: Erosion is the breaking apart and moving of rocks and soil. Given the two facts above, rain causes the breaking apart and moving of rocks and what?
OPTIONS:
- abrasion
- soil
- sand
- reservoirs
- earth
- broken
- ground
- Roads
soil

Fact 1: Annelids are worms such as the familiar earthworm. Fact 2: Earthworms are invaluble for soil health. Given the two facts above, what are invaluable for soil health?
OPTIONS:
- bacteria
- annelids
- sharks
- Exfoliation
- bioaerosols
- plankton
- evaporation
- sunlight

Answer: annelids

Question: Fact 1: Sponges are a source of food for many species of fish. Fact 2: Sponges are also keystone species. Given the two facts above, what are a source of food for many fish species?
OPTIONS:
- layers of fat
- bird species
- human species
- keystone species
- Organic compounds
- barnacles
- gastropod shells
- species of deer
Answer: keystone species

input with options: Fact 1: The Earth being tilted on its rotating axis causes seasons. Fact 2: Because the daylight changes with the seasons, ActiveEarth does, too. Given the two facts above, the Earth being tilted on its rotating axis causes?
OPTIONS:
- permineralization
- wind direction
- daylight changes
- tide changes
- temperature
- plate shifts
- global warming
- dry conditions
output: daylight changes

Problem: OPTIONS:
- barnacles
- chickens
- fur seals
- humans
- heterotrophs
- mammals
- animals
- rabbit
Q: Fact 1: Many consumers feed at more than one trophic level. Fact 2: Consumers are heterotrophs that feed on tissues of other organisms. Given the two facts above, what may eat other organisms at more than one trophic level?
Answer:
heterotrophs