Q: Q: What makes metals shiny? A:

OPTIONS:
- light characterization
- light energy
- light expansion
- light reflection

A: light reflection

input: OPTIONS:
- other variables
- independent elements
- independent approaches
- independent variables Now, answer this question: Q: The values of which factors are controlled by the experimenter over the course of an experiment? A:
A:
output: independent variables

Q: Has this ever happened to you? you walk across a carpet, reach out to touch a metal doorknob, and get an unpleasant electric shock? .the reason you get a shock is because of what? A:

OPTIONS:
- sunlight charge
- temperature charge
- solar charge
- electrical charge

Answer: electrical charge

Problem: OPTIONS:
- grass plants
- oxygen plants
- thermal plants
- vascular plants
Q: Q: What type of plant is the dominant group of land plants? A:
Answer: vascular plants

Problem:OPTIONS:
- sugar
- water
- bacteria
- yeast

Q: Bread has little holes in it from carbon dioxide produced by what? A:
****
A: yeast

Problem:OPTIONS:
- balance
- thought
- sight
- touch

Q: Somatosensation refers to what of the five senses? A:
****
A:
touch