Q: What results when a warm air mass runs into a cold air mass? A:

OPTIONS:
- cool front
- dry front
- rough front
- warm front

Answer: warm front

Problem: OPTIONS:
- methane from livestock
- aerosol spray
- chimneys
- burning of fossil fuels
Q: Q: What is the main cause of outdoor air pollution? A:
Answer: burning of fossil fuels

Problem:OPTIONS:
- nonrenewable
- fossil fuel
- mineral
- renewable

Q: Timber, obtained from trees that can be replanted to replace those that are cut down, is an example of what type of resource? A:
****
A: renewable

Q: What is another term for all eukaryotic organisms that are neither animals, nor plants, nor fungi? A:
OPTIONS:
- paramecium
- prokaryotes
- arthropods
- protists
protists

Q: Alkaline earth metals are what color? A:
OPTIONS:
- white
- black
- reddish orange
- silvery grey

Answer: silvery grey

input with options: Q: The force that blood exerts upon the walls of the blood vessels or upon the chambers of the heart is known as blood what? A:
OPTIONS:
- squeeze
- push
- vaccuum
- pressure
output:
pressure