Fact 1: Some touch receptors sense differences in temperature or pain. Fact 2: Touch receptors are a type of mechanoreceptor. Given the two facts above, some mechanoreceptors sense what in temperature?

OPTIONS:
- Energy
- Energy.
- hunger
- pain
- differences
- kinetic energy
- heat energy
- similarities

Answer: differences

Fact 1: Harming an animal species causes that animal 's population to decrease. Fact 2: Goats are four legged animals. Given the two facts above, what can be harmed to cause its population to decrease?

OPTIONS:
- death
- snail
- squids
- toads
- elms
- Injury
- goat
- clams

Answer: goat

Fact 1: If a plant requires less water then that plant will survive in a drought. Fact 2: Plants are heat and drought tolerant. Given the two facts above, plants that are heat tolerant and require less water are able what? ?

OPTIONS:
- uproot its soil
- produce flowers
- migrate
- growth
- survive
- rest
- spread its seeds
- reproduce

Answer: survive

Fact 1: Antigens are molecules that the immune system recognizes as foreign to the body. Fact 2: Children are born with an immature immune, or defense, system. Given the two facts above, what are molecules that the defense system recognizes as foreign to the body?

OPTIONS:
- Allergies
- lungs
- antigens
- bacteria
- parasites
- atoms
- red blood cells
- acetic acid

Answer:
antigens