Which played an important role in the development of the "throw-away" society?

• the increased use of glass and metals

• objects made of many materials

• attitude changes after WWI

• the shift in manufacturing to developing countries

On average, how much municipal solid waste is generated per person each day in the US?

• 0.1kg
• 1kg
• 2kg
• 4kg

the material that makes up the highest proportion of MSW is

• plastic
• rubber, leather and textiles
• paper and paperboard
• food

electronic waste

• accounts for over 10% of the waste stream
• is almost always recycled
• is more expensive to recycle than to put in a landfill 
• is only a problem in developed nations

Approximately how much MSW is recovered before it enters a landfill or incinerator?

• 15%
• 25%
• 35%
• 60%

The correct order of the three R's is

• Reduce, Recycle, Reuse
• Reduce, Reuse, Recycle
• Recycle, Reuse, Reduce
• Recycle, Reduce, Reuse

Which is NOT a form of source reduction?

• printing double-sided instead of single-sided
• purchasing digital versions of music instead of CD's
• replacing plastic mugs with disposable paper cups
• designing a smaller box for packaging

Which material usually used closed-loop recycling?

• aluminum
• glass
• paper
• plastic

Organic matter in landfills is a problem primarily because

• there is a high risk of toxic leaching
• it contains bacteria that spreads disease
• as it breaks down it can dissolve the containment
• it produces methane gas

For composting to work effectively, the compost

• must be kept very wet
• must be mixed
• must be anaerobic 
• must be protected from high temperatures