Problem:OPTIONS:
- ice
- fibers
- metal
- peat
- keratin
- oil
- glass
- snow

Fact 1: Agreenhouse is used to protect plants from the cold. Fact 2: Agreenhouse is made entirely of glass. Given the two facts above, what can be used to protect plants from the cold?
****
A: glass

Problem:OPTIONS:
- Spring
- cold
- Summer
- Autumn
- started
- Winter
- closed
- mild

Fact 1: When a hemisphere is tilted towards the sun , that hemisphere receives more direct sunlight. Fact 2: When the Earth's northern hemisphere is tilted towards the Sun, it is summer. Given the two facts above, what season is it when the hemisphere is aimed at the sun?
****
A: Summer

Problem:OPTIONS:
- Chemical energy
- salt and water.
- shelter and amusement
- survival
- important habitats
- food and water
- water and fun
- food and shelter

Fact 1: Coral reefs provide food and shelter to many ocean organisms. Fact 2: Organisms or living beings are literally things that are alive. Given the two facts above, coral reefs provide what to many living beings in the ocean?
****
A: food and shelter

Problem:OPTIONS:
- mountains
- ice
- porous
- CO 2
- complex
- colonies
- wetland
- water

Fact 1: Corals form large colonies in shallow tropical water. Fact 2: Corals Corals are in the polyp stage. Given the two facts above, something in the polyp stage can form large colonies in shallow tropical what?
****
A:
water