Q: Fact 1: If all members of a species cannot produce offspring then that species will likely become extinct. Fact 2: Passenger pigeons are extinct. Given the two facts above, what could not produce enough offspring?

OPTIONS:
- Deoxyribonucleicacid
- killer whales
- Echinoids
- single-celled organisms
- sparrows
- great white sharks
- passenger pigeons
- one celled organisms

A: passenger pigeons

Q: Fact 1: Electrical current running through a wire causes that wire to heat up. Fact 2: High currents allow too much power, or electrical energy to be wasted in wires in the form of heat. Given the two facts above, how does energy get wasted in a wire?

OPTIONS:
- carbon dioxide
- It decreases
- scattered light
- it needs them
- to move people
- Evaporation
- sweating
- It heats up

A: It heats up

Q: Fact 1: Light enters the eye through an opening called the pupil. Fact 2: Just behind the pupil is a lens. Given the two facts above, where does light enter the eye?

OPTIONS:
- It used to be covered by water
- just in front of lens
- behind the retina
- h2o
- the body's largest organ
- it flows to a lower level
- absorption
- an area swollen with pus

A: just in front of lens

Q: Fact 1: Friction causes the speed of an object to decrease. Fact 2: After applying the brakes firmly and slowing to the desired speed get off the brakes. Given the two facts above, what causes friction?

OPTIONS:
- chemicals
- Energy.
- energy
- wind
- driving
- brakes
- heat
- nerves

A:
brakes