Problem: OPTIONS:
- medicine
- sun's heat
- heat
- hurtful words
- a pathogens
- parasites
- harmful substances
- Echinoderm.
Q: Fact 1: Skin is used for protecting the body from harmful substances. Fact 2: Skin is a protective organ. Given the two facts above, what does skin help keep out?
Answer: harmful substances
Problem: OPTIONS:
- motility
- molecular make-up
- molecules
- elements contained
- Weight
- energy
- size
- density
Q: Fact 1: When water freezes , that water expands. Fact 2: Water density is determined by temperature. Given the two facts above, what property of a substance changes when it is frozen?
Answer: density
Problem: OPTIONS:
- Trees
- stems
- roots
- Oak
- seeds
- burrs
- grass
- water absorbing petals
Q: Fact 1: Most plants grow roots down into the soil to absorb water and minerals. Fact 2: If the plant is green, it is a producer. Given the two facts above, what can a producer grow down into the soil in order to absorb minerals and water?
Answer:
roots