1. pseudopodia
2. plasmalemma
3. contractile vacuole
4. Both (a) and (b)
contractile vacuole
1. Myanmar
2. Japan
3. South Korea
4. U.S.A.
Japan
1. aluminium ions
2. methane
3. sulphur
4. free radicals of oxygen
free radicals of oxygen
1. oxidation
2. reduction
3. magnification
4. hydratic
magnification
1. PAN
2. NOx
3. CFCs
4. Sulphates
CFCs
1. Has natural geochemical cycles
2. Changes homeostasis of environment
3. Disturb natural flora of a place
4. Become stabilized in ecosystem forever
Changes homeostasis of environment
1. SO2 only
2. CO2 only
3. SO2 ,CO2
4. NO2 and SO2
NO2 and SO2
1. 105 dB
2. 75 dB
3. 135 dB
4. 165 dB
75 dB
1. biological magnification
2. gene mutation
3. photochemical smog
4. ozone destruction
gene mutation
1. natural geochemical cycles
2. the natural balance of our environment
3. the natural flora of our environment
4. the natural wild life of our region
the natural balance of our environment