input: OPTIONS:
- heat energy
- pulse
- heat
- photons
- complete
- energy
- Heart rate
- electrons Now, answer this question: Fact 1: Completing a circuit causes electricity to flow through that circuit. Fact 2: An electrical current is a flow of electrons. Given the two facts above, completing a circuit causes _ to flow through that circuit?
A:
output: electrons

input: OPTIONS:
- Organic compounds
- harmful substances
- Energy.
- food ingredients
- h2o
- bioaerosols
- food particles
- carbon Now, answer this question: Fact 1: Earthworms are important deposit feeders that help form and enrich soil. Fact 2: Deposit feeders ingest sediment and extract food particles. Given the two facts above, earthworms ingest sediment and extract what from soil?
A:
output: food particles

input: OPTIONS:
- Physical weathering
- adding heat
- It used to be covered by water
- permineralization
- water conservation
- Roots get more oxygen
- The area was once underwater
- Riding a bike Now, answer this question: Fact 1: The looseness of soil increases the amount of oxygen in that soil. Fact 2: Soil oxygen effects on root development. Given the two facts above, why does it help for dirt to be loose?
A:
output:
Roots get more oxygen