Fact 1: Most invertebrates have a nervous system. Fact 2: Invertebrates are animals without a backbone. Given the two facts above, which type of system do most animals without backbones have?

OPTIONS:
- sensory neurons
- Veins and arteries.
- Nervous system
- Stereo system
- Root system
- to move people
- Skeletal system
- insects

Answer: Nervous system

Fact 1: Condensation is when change from a gas into a liquid by reducing heat energy. Fact 2: Light energy is converted into heat energy. Given the two facts above, decreasing the amount of light results in lower temperatures allowing a potential increase of what?

OPTIONS:
- salinity
- Condensation
- electricity
- Temperature
- Evaporation
- Quality of life
- aerobic capacity
- Dehydration

Answer: Condensation

Fact 1: Acid rain has a negative impact on water quality. Fact 2: Cars and trucks emit tremendous amounts of airborne pollutants, which increase acid rain. Given the two facts above, which of the following has the worst effect on water quality?

OPTIONS:
- bacteria
- Pesticides
- fossil fuels
- deforestation
- cars and trucks
- humans disturb it
- flooding
- Destroy bridges

Answer: cars and trucks

Fact 1: Pressure receptors are found mainly in the skin. Fact 2: Pacinian corpuscles are pressure receptors. Given the two facts above, _ are found mainly in the skin.?

OPTIONS:
- To keep their body heat.
- Veins and arteries.
- layers of fat
- Leptospirosis
- refraction of light
- Pacinian corpuscles
- major threat to health
- it keeps an organism warm

Answer:
Pacinian corpuscles