Answer:
Explanation: 1.Recycling is very important as waste has a huge negative impact on the natural environment.Harmful chemicals and greenhouse gasses are released from rubbish in landfill sites
Toy gun - Plastic
Ballpen - brass
lamp shade - steel/brass
Coin purse - paper
D. Twenty countries whose people share a common religion and cultural heritage
The only disadvantage I could think of would be price of equipment needed to produce energy from the source (i.e. price of solar panels)