1. decrease of 25 percent
   increase of 25 percent
2. increase of 5 percent
   no change

According to the American Association of Poison Control Centers, the number of "serious outcome" poisonings increased almost 5 percent.

1. invisible
   odorless
2. tasteless
   all of the above

Radon gas is so difficult to detect because it is odorless, tasteless and invisible.

1. basement
   attic
2. windows

Radon is a naturally occurring gas that typically enters buildings through a breach in the foundation.

1. shingles
   emphysema
2. arthritis
   lung cancer

The airborne particles in radon can get trapped in the lungs, leading to lung cancer.

1. a contaminated source
   an outdated municipal delivery system
2. outdated home plumbing fixtures
   all of the above

Water is susceptible to contamination from "cradle to grave," beginning at the source and continuing to the tap.

1. bottled water
   a professionally installed purification system
2. boiling water
   free-standing water filters

While boiling water might remove germs from drinking water, it will not remove certain chemicals and heavy metals.

1. about 33 percent
   about 66 percent
2. about 80 percent
   all of them

According to estimates by the Environmental Protection Agency, roughly two thirds of the homes built before 1940 featured lead paint.

1. remove it immediately
   leave it alone
2. paint over it

Since lead paint is only dangerous if ingested, and given the expense and delicate nature of removal, experts generally recommend leaving paint in good condition alone.

1. it's strong and durable
   it's heat-resistant
2. it's a good insulator
   all of the above

Asbestos quickly gained favor in the construction business because it was strong, durable, heat resistant and a good insulator.

1. floor and ceiling tiles
   insulation
2. roofing materials
   all of the above

Asbestos was used in a variety of construction applications, including all of these, plus adhesives, plasters, cement and joint compounds.

1. warm and dry
   dark and damp
2. bright and sunny
   none of the above

Dark, damp areas of the home are the ideal setting for mold growth, which is why mold is a common post-flooding problem.

1. roughly 200
   roughly 600
2. more than 1,000

According to estimates by the Environmental Protection Agency, more than 1,000 varieties of mold have been identified in the United States.

1. remove the mold
   remove the spores
2. remove the source of dampness
   all of the above

A dark, damp area will continue to attract mold until all of these steps are followed and the spores and source of dampness are also removed.

1. an overburdened electrical outlet
   inadequate or faulty wiring
2. automatic shut-off feature on appliances
   a full lint vent on a dryer

Outdated electrical systems in older homes often cannot handle the increased demand, even if individual appliances are more efficient. Having an automatic shut-off feature is NOT a hazard.

1. herbicides
   pesticides
2. fertilizer
   all of the above

All of these products can pose a significant health risk if not used (and stored) properly.

1. spring
   summer
2. winter
   autumn

Winter is the most dangerous season -- not only because homeowners are using oil- or gas-burning furnaces, but also because the house isn't properly vented.

1. hard-wired detector
   battery-powered detector
2. hard-wired detector with battery back-up
   They really aren't necessary.

CO detectors are absolutely essential, and a hard-wired model with battery back-up will guard against power outages.

1. 100 per day
   11,000 per day
2. 20,000 per day

The AAPCC's 57 poison centers fielded 3.9 million calls in 2010, an average of nearly 11,000 per day.

1. 10 percent
   50 percent
2. 90 percent
   none

The AAPCC estimates that roughly 90 percent of all poisonings happen at home.

1. air freshener
   ammonia
2. bleach
   all of the above

A 2008 study found that babies were 41 percent more likely to develop asthma if their mom had been exposed to chemicals found in bleach, ammonia, air fresheners and other home cleaning products while pregnant with them.