2. A green roof, also known as an eco roof, living roof, vegetated roof, or green roof, is one that is either partially or
completely covered in vegetation on top of the human-made roofing structure
What is a Green Roof
4. sunlight is a renewable energy source. Solar panels convert sunlight into usable energy. Solar thermal panels
use sunlight to heat water for washing and heating, while solar photovoltaic (PV) panels convert sunlight into
electricity.
What is solar power ?
6. Greywater can be defined as any domestic wastewater produced, excluding sewage. The main difference between
greywater and sewage (or blackwater) is the organic loading. Sewage has a much larger organic loading compared to
greywater
What is greywater ?
7. Recycling is processing used materials (waste) into new, useful products. This is done to reduce the use of raw materials that
would have been used. Recycling also uses less energy and great way of controlling air, water and land pollution.
What is recycling ?
Waste items that are usually recycled include:
Paper waste:
Paper waste items include books, newspapers, magazines, cardboard boxes and envelopes.
Glass waste:
All glass products like broken bottles, beer and wine bottles can be recycled.
Plastic waste:
Items include plastic bags, water bottles, rubber bags and plastic wrappers.
Aluminium waste:
Cans from soda drink, tomato, fruit cans and all other cans can be recycled
8. By :
Ahmed Abdullah Al shamrani
Mazen Saad Al zahrani
Hussam Siraj Abo Aeash
Mohamed Munshi
