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प्रश्न
Could you observe any microorganisms?
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उत्तर
We are not able to see microorganisms with a naked eye. We need a microscope to confirm these. So it is not possible to observe microorganisms directly during observations.
संबंधित प्रश्न
Which one term in the following includes the others?
air, flora, fauna, environment, water, sunlight, soil
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...........
Name the organisms whose uncontrolled activities are damaging the environment.
"Burning fossil fuels is a cause of global warming." Justify this statement.
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.?
Which one of the places you visited shows greater biodiversity?
What are the different purposes for which fuels such as petrol, diesel, kerosene, natural gas, coal, and wood are used?
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.
book.
Classify the following as natural or man-made.
brick
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
What are the by-products of fertiliser industries? How do they affect the environment?
The abiotic factors are the non-living parts such as sunlight, air, water, and minerals in the soil.
