Describe how the three principles of sustainability can be applied to create a successful ecocity.
What will be an ideal response?
| i) | Reliance on solar energy: Emphasis on solar and other clean forms of energy; high-efficiency vehicles and appliances are used; people-oriented city where residents can walk, bike or use mass transportation. |
| ii) | Biodiversity: Trees and greenery are adapted to the local climate and soil; trees provide green spaces for shade and beauty as well as connected corridors for wildlife habitats. These green spaces also reduce soil erosion, air pollution and noise. Parks and other facilities are easily accessible to all. |
| iii) | Nutrient Cycling: Small organic gardens provide food locally; polluted areas are cleaned up and restored; unpolluted areas are preserved. |
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Salmon spawn in seawater and Atlantic eels spawn in fresh water.
Answer the following statement true (T) or false (F)
Which one of the following best describes a flux?
A) Movement of elements or compounds between reservoirs in a biogeochemical cycle B) A type of flower used for food and fiber; also known as linseed C) Variation in output from a large water reservoir, such as output through a hydroelectric dam D) A pool or reservoir where an element or compound is stored within a biogeochemical cycle
Which of the following statements about shifting cultivation is most accurate?
A) Shifting cultivation is not sustainable. B) Shifting cultivation is sustainable. C) Shifting cultivation can be sustainable if the population is small enough for the land area available for this agricultural system. D) Shifting cultivation is no longer practiced. E) Shifting cultivation is usually practiced in the middle latitudes.
Which type of physical weathering involves the removal of overlying materials?
A. mineral growth B. wedging C. unloading D. abrasion