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प्रश्न
What’s the solution?
We have to remove insects from the grain without using insecticides.
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. The 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.
Fill in the following blank with suitable word :
The science that deals with the inter-relationships of living things with one another and their environment is called...........
Write one or two word for the following statement/definition :
The physical and biological world where we live in
What is meant by 'environment'?
What makes the earth’s atmosphere a heterogeneous mixture?
Could you observe any microorganisms?
Which one of the places you visited shows greater biodiversity?
What substances in the soil are useful for the growth of plants?
Give reason.
It is important to conserve the living components of the environment.
Classify the following as natural or man-made.
dolphin
Classify the following as natural or man-made.
water
Classify the following as natural or man-made.
pen
Classify the following as natural or man-made.
table.
_______ 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?
These are abiotic factors.
- Sunlight
- Bacteria
- Air
- Plants
Select the mis-matched pair in the following and correct it.
