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प्रश्न
How are corals formed?
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उत्तर
Corals are a hard substance composed of a skeleton of tiny marine creatures called coral polyps. When corals die their hard skeletons remain fixed in place. Since these polyps live in colonies when they die their large accumulation of skeletons forms coral reefs which are circular or ridge-like.
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संबंधित प्रश्न
Name four countries bordering the Mediterranean Sea. Also, name the capitals of these countries.
Write true or false. Correct the false statement.
Softwood trees such as pine, fir, and spruce are found in the taiga belt.
A list of names of Wildlife and Vegetation species has been provided.
Write them in the appropriate Columns given below.
Pine, Oak, Lynx, lichen, myrtle, olive, squirrel, seal, moss, spruce, beech, laurel, penguin, short grass.
| Climatic Regions | Wildlife | Vegetation |
| Arctic and sub-Arctic | ||
| Maritime Climate or west European Climate | ||
| Central European climate or temperate interior | ||
| Eastern European or continental climate | ||
| Mediterranean Climate | ||
| Desert Climate |
This is a photograph of Victoria Falls.
- Name the explorer who discovered it.
- On which river is this fall located?
What do the terms ‘tundra’, ‘taiga’, and ‘steppes’ refer to? Explain each of the terms and state where each is found.
Match the following:
| Column A | Column B |
| 1. Egypt | (i) Accra |
| 2. Kenya | (ii) Tripoli |
| 3. South Africa | (iii) Addis Ababa |
| 4. Ethiopia | (iv) Cairo |
| 5. Ghana | (v) Nairobi |
| 6. Libya | (vi) Pretoria |
On a blank outline map of Africa
(a) Mark with brown lines the Atlas and the Drakensberg Mountains.
(b) Shade with yellow and label the Sahara Desert and the Kalahari Desert.
(c) Shade with light brown the plateau region of Africa, the Ethiopian and Adamawa Highlands.
(d) Colour with blue and label neatly all the surrounding water bodies, oceans, seas, bays, gulfs, and straits.
Which region is called an open-air zoo? Why?
Match the columns
| Column A | Column B |
| 1. acacia | (i) dangerous reptile |
| 2. joey | (ii) monotreme |
| 3. death adder | (iii) baby kangaroo |
| 4. echidna | (iv) laughing jackass |
| 5. kookaburra | (v) wattle |
Study the map given here and answer the questions (lines indicate the different climatic regions)
- Describe the vegetation of region C.
- What are the most outstanding characteristics of the climate of region B?
- On the map, draw the South-East Trade Winds with red
- By what name are the temperate grasslands known in the Murray-Darling Basin? Write the name in the appropriate place on the map.
