Radiation is a health hazard as it causes
leukaemia
polio
pneumonia
haemophilia
- . Biome is
- Which of the following functions performed by forests help most in controlling drought
- The best indicator of SO^2 pollution is
- One of these is a renewable source of energy:
- First link in any food chain is green plant because
- The biggest herbarium of India is
- Pedology is the study of
- Desert plants are generally
- Humus is an example of
- Radiation is a health hazard as it causes
- In cities like Mumbai and Delhi, the major air pollutants are
- The least porous soil among the following is
- Carbon cycle includes
- An area of soil is thoroughly wetted and allowed to drain until capillary movement of water is stopped.…
- The first stage of plant succession on earth is called
- Autumn colouration of leaves appears only in
- Primary treatment of sewage means
- In grassland ecosystem the pyramid of energy is
- Hie earliest settlers on barren lands are generally
- Deforestation may reduce the chances of
- Laterization is a process which results in the
- Hie sequence blue green algae > crustose lichens » foliose lichens > mosses » shrubs » dicotyledonous…
- Silent valley is situated in
- What will happen if our water resources are continued to be polluted by industrial wastes
- Correct definition of ecosystem is :
- Smog is a common pollutant in places having
- The nitrifying bacteria which oxidise nitrite to nitrates include
- The ultimate source of energy for fish is
- Which is the correct food chain
- A habitat of long severe winters and growing season limited to a few months of summer constitutes