Advertisements
Advertisements
प्रश्न
Classify the following as natural or man-made.
brick
विकल्प
Natural
Man-made
Advertisements
उत्तर
brick - Man-made
संबंधित प्रश्न
Name the organisms whose uncontrolled activities are damaging the environment.
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.?
Could you observe any microorganisms?
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.
What substances in the soil are useful for the growth of plants?
What are the different purposes for which fuels such as petrol, diesel, kerosene, natural gas, coal, and wood are used?
Give reason.
It is important to conserve the living components of the environment.
Classify the following as natural or man-made.
pen
It is a biodegradable waste.
_______ 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!.
These are abiotic factors.
- Sunlight
- Bacteria
- Air
- Plants
Excessive exposure of humans to UV-rays results in
- damage to immune system
- damage to lungs
- skin cancer
- peptic ulcers
Suggest one word for the following statement/definition.
The physical and biological world where we live in
Select the mis-matched pair in the following and correct it.
Explain some harmful effects of agricultural practices on the environment.
