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प्रश्न
What’s the solution?
We have to remove insects from the grain without using insecticides.
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उत्तर
- Let the grain dry in the sunlight. The harsh sunlight does not allow eggs and caterpillars to grow in the grain.
- Keep dried neem leaves in the container in which the grains are stored. Neem acts as a repellent for insects.
- Grains like beans are smeared with mud. The mud particles keep the weevils away from infesting the grains.
- The place where grain is stored should be cool and dry. It should be airy. The chances of insect infestations are less in such storage places.
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.
The number of malaria patients in a village increased tremendously when large number of frogs were exported from the village. What could be the cause for it?
Name the organisms whose uncontrolled activities are damaging the environment.
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.
Could you observe any microorganisms?
Classify the following as natural or man-made.
Soil.
Classify the following as natural or man-made.
horse.
Classify the following as natural or man-made.
stone.
Classify the following as natural or man-made.
trees
Classify the following as natural or man-made.
chair
Classify the following as natural or man-made.
table.
Classify the following as natural or man-made.
brick
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!.
These are abiotic factors.
- Sunlight
- Bacteria
- Air
- Plants
The abiotic factors are the non-living parts such as sunlight, air, water, and minerals in the soil.
