Exercise 27. Match the pictures with the following words and phrases.
A. Vegetation. D. Wind power.
B. Solar cells. E. Solar heat.
C. Hydroelectric power. F. Runoff water.
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Exercise 28. Match the words with their definitions.
| 1. Circulate. 2. Nutrients. 3. Pumps. 4. Integrate. 5. Sewage. 6. Purification. 7.Hygienic. | A. Used water that is carried away from houses by pipes under the ground. B. Very clean, so that bacteria cannot spread C. To move around or through something, or to make something move around or through something. D. Removal of dirty or harmful substances from something. E. Chemicals or food that provides what is needed for plants or animals to live and grow. F. Machines for forcing liquid or gas into or out of something. G. To combine two or more things to make something more effective. |
Exercise 29. Read the text below. Match each part of the text (A–D) with the correct heading (1–4).
1. Sewage Systems that Recycle Nutrients
2. Recirculating Organic Material
3. Heating and Cooling with Renewable Energy Sources
4. Producing Electricity with Renewable Energy Sources
ECOCYCLES
The resources used in a sustainable construction should circulate in an ecological cycle. Energy systems based on renewable energy sources are used. Sewage systems are chosen to recycle nutrients. Organic material is returned to the earth to provide nutrients for vegetation and cultivation.
A.____________________
Renewable heat involves using biomass in combination with solar heat. Such systems use an accumulation tank to store heat. Heat pumps are also used. They make use of low–temperature environmental heat to heat and cool.
B.____________________
This refers to generating electricity from hydroelectric power. Additional renewable electricity may come from biomass power plants and wind power. In the long run, solar cells will become cheaper and be integrated into roofs and facades.
C.____________________
Sorting sewage is a way to minimize pollution. Sewage can be separated into runoff water, traffic water, grey water, urine and black water. Mechanical and chemical purification can be complemented with natural purification methods. It should be easy to return the final products to agriculture in a hygienic manner.
D.____________________
Vegetation and cultivation fulfil several functions: they produce food and energy and return organic waste and sewage sludge to ecological cycles. The biological diversity, beauty and well–being they provide are also important. Wild areas, parks and gardens, vegetation around buildings, on buildings and in buildings are important features.