Fact 1: Most plants continue to grow throughout their lives. Fact 2: Lilies continually produce new bulbs, from which grow new plants. Given the two facts above, what continues to grow throughout their lives? ?

OPTIONS:
- potatoes
- Hemoglobin
- tortoises
- plastic roses.
- Human teeth.
- Lilies.
- Silk daisies.
- vegetation

Answer: Lilies.

Fact 1: Some arthropods have special excretory structures. Fact 2: Arthropods contain jointed appendages. Given the two facts above, some animals with jointed what have special excretory structures?

OPTIONS:
- skin
- appendages
- they bend
- eyes
- muscles
- sensory neurons
- organ
- insects

Answer: appendages

Fact 1: Faulting of rock in Earth 's crust causes earthquakes. Fact 2: Earthquakes and volcanoes are violent proof of Earth's shifting crust. Given the two facts above, shifting in the Earth's crust are caused by what?

OPTIONS:
- Greenhouse gases
- rock beds
- friction
- avalanches
- fault in rocks
- no movement in the crust
- Movement
- Time and energy

Answer: fault in rocks

Fact 1: Melting is when solids are heated above their melting point. Fact 2: Solid ice is melted into liquid water. Given the two facts above, what does ice melt into?

OPTIONS:
- gas
- water
- a solute
- air
- a delta
- crust
- liquid
- lava

Answer:
liquid