Fact 1: Passive immunity lasts only as long as the antibodies survive in body fluids. Fact 2: Booster shots are needed periodically to build up the passive immunity again. Given the two facts above, what are needed after antibodies won't survive in body fluids?

OPTIONS:
- booster shots
- Veins and arteries.
- chicken pox
- Energy.
- gun shots
- kinetic energy
- diseased tissue
- turn to a doctor

Answer: booster shots

Problem: OPTIONS:
- Reverse osmosis
- fossil fuels
- Fresh water
- Carbon filter
- chlorofluorocarbons
- Sulfur dioxide
- Pollution
- harmful substances
Q: Fact 1: Acid rain has a negative impact on water quality. Fact 2: Sulfur dioxide causes acid rain. Given the two facts above, what has a negative impact on water quality?
Answer: Sulfur dioxide

Problem:OPTIONS:
- oxygen
- Pesticides
- cold temperatures
- smoking
- bacteria
- toxins
- digestion
- influenza

Fact 1: Pathogens can cause disease. Fact 2: Most pathogens are bacteria. Given the two facts above, what can cause disease?
****
A: bacteria

Fact 1: High pressure systems cause clear weather. Fact 2: During windy weather, the pollution is dispersed and cleared away. Given the two facts above, what cause pollution to disperse?
OPTIONS:
- low pressure systems
- fissures of hot, acidic water
- zero pressure systems
- fossil fuels
- harmful substances
- no pressure systems
- high pressure systems
- Greenhouse gases
high pressure systems

Fact 1: Climate influences plant growth, biodiversity, and adaptations of land organisms. Fact 2: Forest communities influence their climate and their soil. Given the two facts above, what influence plant growth, biodiversity, and adaptations of land organisms?
OPTIONS:
- high temperature
- forest communities
- temperature
- Temperature changing
- global warming
- local weather changes
- Greenhouse gases
- Greenhouse gasses

Answer: forest communities

input with options: Fact 1: Sweat wets the skin, and when it evaporates, it cools the body. Fact 2: Sweat is released from sweat glands beneath the skin, and as it evaporates, the skin is cooled. Given the two facts above, what cools the skin?
OPTIONS:
- humidity
- temperature
- condensation
- Solar energy
- evaporation
- vaporization
- layers of fat
- water vapor
output:
evaporation