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प्रश्न
Classify the following as natural or man-made.
cottonwool
विकल्प
Natural
Man-made
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उत्तर
cottonwool - Natural
संबंधित प्रश्न
Which one term in the following includes the others?
air, flora, fauna, environment, water, sunlight, soil
The use of one of the following will pollute the environment. This one is :
(a) paper carry bags
(b) cotton cloth carry bags
(c) nylon cloth carry bags
(d) jute carry bags
Write the percentage of solar energy captured by the autotrophs.
"Burning fossil fuels is a cause of global warming." Justify this statement.
The compound obtained on reaction of iron with steam is/are:
In the course of your observations, did you notice any signs of the presence of living things, though the living things themselves were not seen? For example, did you notice any partly eaten fruits or shells, fallen feathers, animal tracks, dung, droppings, nests, cocoons, eggs, honeycombs, etc.?
Micro-organisms form a part of the environment.
Give reason.
It is important to conserve the living components of the environment.
Classify the following as natural or man-made.
Soil.
Classify the following as natural or man-made.
water
Producers are ________.
Take a square paper. Fold its diagonals. Draw three lines in three triangles as shown in the picture.
Cut from the edge of the diagonal to the center as shown in the picture.
If you fold this triangle and paste it behind the third triangle you get a pyramidal shape.
In one of the triangles, draw images of each of the organisms in the different levels.
In another triangle write the names of the organisms. In the last triangle, write the energy level of the organism. Have a look at the following example. You must come up with different organisms!.
Excessive exposure of humans to UV-rays results in
- damage to immune system
- damage to lungs
- skin cancer
- peptic ulcers
Select the mis-matched pair in the following and correct it.
What are the by-products of fertiliser industries? How do they affect the environment?
Explain some harmful effects of agricultural practices on the environment.
