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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
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?
Write one or two word for the following statement/definition :
The physical and biological world where we live in
Name the organisms whose uncontrolled activities are damaging the environment.
What makes the earth’s atmosphere a heterogeneous mixture?
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.?
What’s the solution?
We have to remove insects from the grain without using insecticides.
Micro-organisms form a part of the environment.
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.
water
Classify the following as natural or man-made.
book.
Classify the following as natural or man-made.
pen
Classify the following as natural or man-made.
table.
Classify the following as natural or man-made.
brick
Producers are ________.
It is a biodegradable waste.
Excessive exposure of humans to UV-rays results in
- damage to immune system
- damage to lungs
- skin cancer
- peptic ulcers
