Q: Q: Because they have free electrons, metals are able to conduct what? A:

OPTIONS:
- sound
- light
- radiation
- electricity

A: electricity

input: OPTIONS:
- precipitation
- evaporation
- ionization
- oxidation Now, answer this question: Q: What is the addition of oxygen to a molecule or the removal of hydrogen from a molecule called? A:
A:
output: oxidation

Q: How many bones does the mammalian middle ear have? A:

OPTIONS:
- two
- twelve
- four
- three

Answer: three

Problem: OPTIONS:
- formaldehyde and cadaverine
- sulfur and formaldehyde
- methane and sulfur
- cadaverine and putrescine
Q: Q: What are the names of foul-smelling amines, formed as a part of the decay process after death? A:
Answer: cadaverine and putrescine

Problem:OPTIONS:
- respiration
- glycolysis
- digestion
- photosynthesis

Q: What process allows plants to convert light energy into sugars and energy for food? A:
****
A: photosynthesis

Problem:OPTIONS:
- 42 percent
- 10 percent
- 25 percent
- 33 percent

Q: Since europeans settled in the united states, about what percentage of topsoil has eroded away? A:
****
A:
33 percent