The water drops on the surface of glass in which ice cubes are placed is because of
Atmospheric Vapour
The glass itself
The ice cubes inside
None of above
During photosynthesis, plants absorb___________ and watervapour.
Carbondioxide
Nitrogen
Oxygen
Natural gas
Skin forms the breathing organ of
Both earth worm and frog
Earth worm only
Both fish and frog
Frog only
Which of the following element supports all animal and plant life on respiration ?
Potassium
Which energy is needed for bodily activities?
Light energy
Heat energy
Both light and heat energy
Electric energy
Which of the following does not affect ozone layer?
Cl2
CH3Cl
NO
CFCl3
The largest component of air is
Hydrogen
Carbon dioxide
Lungs expel:
Both A & B
Smoking is injurious to health because it contains
Charcoal
Nicotine
Carcinogens
Carotene
Global warming is the Increased level of
carbondioxide
Helium
