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प्रश्न
What substances in the soil are useful for the growth of plants?
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उत्तर
- Plants require water, minerals, and other substances in the soil for their growth.
- The substances formed due to the decomposition of dead and decaying plant and animal material are very useful for plants.
- These substances help in the rapid growth of plants.
संबंधित प्रश्न
You being an environmentalist are interested in contributing towards the conservation of natural resources. List four activities that you can do on your own.
"Burning fossil fuels is a cause of global warming." Justify this statement.
What makes the earth’s atmosphere a heterogeneous mixture?
Which one of the places you visited shows greater biodiversity?
What’s the solution?
We have to remove insects from the grain without using insecticides.
Classify the following as natural or man-made.
Soil.
Classify the following as natural or man-made.
stone.
Classify the following as natural or man-made.
sunlight
Classify the following as natural or man-made.
water
Classify the following as natural or man-made.
trees
Classify the following as natural or man-made.
book.
Producers are ________.
_______ is the process of converting waste materials into new materials.
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!.
When is the world environment day celebrated?
Excessive exposure of humans to UV-rays results in
- damage to immune system
- damage to lungs
- skin cancer
- peptic ulcers
Explain some harmful effects of agricultural practices on the environment.
