1. gasoline, propane and oil
   natural gas, wood and coal
2. all of the above

Almost anything that you burn in your home can produce carbon monoxide, including gasoline, propane, oil, natural gas, wood and coal.

1. very little
   a moderate amount
2. a significant amount

Only a small amount of carbon monoxide exposure can cause health complications. Even the carbon monoxide emissions from a chainsaw can cause damage.

1. It destroys the lining of your vessels.
   It replaces the oxygen in your blood.
2. both of the above

Carbon monoxide replaces the oxygen in your blood. Your tainted carbon monoxide blood is then carried to all your vital organs.

1. reversible damage to the brain, lungs and heart
   permanent damage to the brain, lungs and heart
2. reversible damage to the liver, pancreas and kidneys

Even prolonged, mild carbon monoxide exposure leads to permanent damage to your brain, lungs and heart. Mild exposure is generally not fatal, but does have lifelong health consequences.

1. nausea, vomiting and dizziness
   burning eyes, headaches and difficulty breathing
2. both of the above

Be aware and leave your surroundings if you experience moderate carbon monoxide exposure symptoms. These symptoms include: nausea, vomiting, dizziness, burning eyes, headaches, difficulty breathing and confusion.

1. the flu
   food poisoning
2. both of the above

The signs of moderate carbon monoxide poisoning, such as nausea and vomiting, can be easily mistaken as the flu or food poisoning.

1. infants and the elderly
   people with respiratory illnesses
2. both of the above

Carbon monoxide poisoning can be fatal, especially for certain at risk groups, including infants, the elderly, and people with respiratory and circulatory illnesses.

1. by properly maintaining your fuel burning appliances
   by using combustible fuels in ventilated areas
2. both of the above

Take care when using fuel-burning appliances and make sure they are well maintained and working properly. You should also burn combustible fuels only in ventilated areas.

1. a clogged chimney
   a cracked furnace
2. both of the above

Carbon monoxide exposure can be the result of: a car left running in the garage, a cracked furnace or a clogged chimney, as well as many other fuel-burning situations in the home, such as a gas stove top

1. on the ceiling
   above a doorway
2. low to the ground

Carbon monoxide gathers low to the ground. Therefore, a carbon monoxide detector works best when it's installed close to the floor.

1. Call the fire department immediately.
   Check to see if anyone is sick and open up your windows.
2. Leave the house immediately.

If your carbon monoxide detector goes off, don't panic. First, check to see if anyone is feeling sick and ventilate your house.

1. if someone starts feeling sick
   if the detector doesn't shut off
2. both of the above

Leave your house and don't go back inside if the detector doesn't shut off on its own. If this occurs, or if someone is feeling sick, call emergency services.

1. the faster the detector will respond
   the higher the pitch of the sounding alarm
2. the louder the alarm will sound

It can take hours for your detector to sound if there is a low carbon monoxide concentration in the air. Alternatively, it can take mere seconds for a detector to sound if there is a high carbon monoxide concentration.

1. a little quieter than a lawnmower
   louder than the highest setting on your TV
2. a very high pitched but quiet beeping sound

A carbon monoxide detector can awaken you from your slumber and alert you to trouble. It is just slightly quieter than a lawnmower.

1. It mimics carbon monoxide poisoning in the blood.
   It uses light sensors to detect carbon monoxide levels.
2. It uses reproduced biological cells to detect carbon monoxide levels.

A biomimetic carbon monoxide detector has a special gel that absorbs carbon monoxide. It mimics the effects of carbon monoxide in the blood.

1. 2,000 people
   15,000 people
2. 30,000 people

Hospital emergency rooms in the United States treat approximately 15,000 people for carbon monoxide poisoning each year. Moreover, almost 500 Americans die from carbon monoxide poisoning each year.

1. can be either battery operated or plugged in
   can only be plugged in
2. are only battery operated

You can get carbon monoxide detectors that are battery operated or plugged into an outlet. Battery operated carbon monoxide detectors are typically preferable, as they work during power outages.

1. every six months
   once a year
2. every two to three years

A faulty furnace and a blocked or dirty chimney can easily lead to trouble. Make sure to have these two major heating sources checked by a professional each and every year.

1. once a month
   every six months
2. whenever it starts to beep

Your carbon monoxide detector monitors an odorless, tasteless and colorless gas. It's therefore imperative to check your detector once a month to make sure it's working properly.

1. Make sure your vents are clear of snow.
   Never leave your heat on high for extended periods of time.
2. both of the above

Make sure that all of your vents, including your furnace, water heater and dryer vents, are free from snow. Snow-covered vents can lead to carbon monoxide exposure.