Q: Fact 1: Viruses are so small that they can be seen only with an electron microscope. Fact 2: Viruses include the Tobacco Mosaic Virus. Given the two facts above, how can cells of the Tobacco Mosaic be seen? | OPTIONS:
- refraction of light
- an area swollen with pus
- by indirect light
- death and devastation
- bending light rays
- electron microscope
- deadly and devastating
- Veins and arteries.
A: electron microscope

Q: Fact 1: If an object reflects light toward the eye then that object can be seen. Fact 2: Without light there is nothing to connect the eye to the object. Given the two facts above, without what, no object can be seen? | OPTIONS:
- matter
- flowers
- Energy.
- air
- energy
- shade
- lenses
- light
A: light

Q: Fact 1: Wind and rain cause erosion. Fact 2: Soil erosion, or rather soil movement, is a natural process. Given the two facts above, wind and rain can cause what? | OPTIONS:
- deforestation
- Greenhouse gases
- Physical weathering
- rainfall
- flooding
- contamination
- Pollution
- Soil movement
A: Soil movement

Q: Fact 1: Disease-causing microbes have a negative impact on the body. Fact 2: Microbes are also called microorganisms. Given the two facts above, what has a negative impact on the body? | OPTIONS:
- disease-causing microorganisms
- air
- water
- wind and erosion
- food
- smallest agents of disease
- exposure to cold
- influenza orthomyxoviruses
A: disease-causing microorganisms