Problem:OPTIONS:
- change into a solid
- freeze
- change into a liquid
- rapid expansion
- flow of electrons
- change into a gas
- chemical reaction
- It gets heated up

Fact 1: Heating salt water causes the water to evaporate while the salt remains. Fact 2: Evaporation is the change of state from a liquid to a gas. Given the two facts above, heating salt water causes the water to do what while the salt remains?
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A: change into a gas

Problem:OPTIONS:
- bivalves
- sub-units of species
- Something coming from a gland
- mussels
- plankton and nonliving organic
- Something made from fermented ricce
- mollusks
- Microscopic organisms

Fact 1: Bivalves feed on plankton and nonliving organic matter. Fact 2: Mussels are bivalve mollusks. Given the two facts above, what do mussels eat?
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A: plankton and nonliving organic

Problem:OPTIONS:
- one celled organisms
- bacteria
- viruses
- chemical messengers
- carbon
- heat energy
- plant reproduction
- single-celled organisms

Fact 1: Plant reproduction often requires pollen. Fact 2: Hay fever is caused by an allergy to pollens or moulds. Given the two facts above, hay fever is caused by ?
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A: plant reproduction

Problem:OPTIONS:
- fever
- Leptospirosis
- resistance
- Chlorophyll
- potassium
- disease
- bacteria
- parasites

Fact 1: Passive immunity lasts only as long as the antibodies survive in body fluids. Fact 2: Factors in Body Fluid Health Potassium and sodium are crucial to the body's fluid balance. Given the two facts above, passive immunity lasts when the antibodies survive in something containing what?
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A:
potassium