Problem:OPTIONS:
- lake
- ice
- crust
- sky
- rivers
- nektar
- Weight
- rock

Fact 1: When water freezes , that water expands. Fact 2: Water in the rocks pushes out when it freezes thus causing the rocks to break. Given the two facts above, what does frozen water break?
****
A: rock

Problem:OPTIONS:
- the petals
- Roundworms
- energy
- the roots
- Roundworms.
- the succulents
- fibrous
- the arms

Fact 1: Astem is used to store water by some plants. Fact 2: When it rains, the roots absorb water quickly and the plants store the water in the stems. Given the two facts above, some plants store water after absorbing it with what?
****
A: the roots

Problem:OPTIONS:
- treat cataracts
- harm them
- Relieve pain
- Dehydration
- kill them
- hydrate them
- protect them
- cleanse them

Fact 1: Vinegar can cause harm to the eyes. Fact 2: Vinegar is dilute acetic acid. Given the two facts above, what can acetic acid do to the eyes?
****
A: harm them

Problem:OPTIONS:
- The flow of water
- loose soil
- Drought
- deforestation
- Adequate subsurface drainage
- mouth of rivers
- Physical weathering
- Lack of rain

Fact 1: Erosion can cause a landslide. Fact 2: And the erosion caused by the unimpeded flow of water is an example of unintentional change. Given the two facts above, what can cause landslides?
****
A:
The flow of water