An essential constituent of all proteins.
Helium
Nitrogen
Oxygen
CO2
Global warming is caused by
Argon
Carbon dioxide
Atmosphere has ______________________ % of nitrogen.
78%
0.03%
99%
50%
Which energy is needed for bodily activities?
Light energy
Heat energy
Both light and heat energy
Electric energy
The smallest unit of living matter.
Cells
Tissues
Organs
Plants
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
Which of the following statement is wrong about ozone layer?
A well marked ozone layer is present in the stratosphere
Ozone layer damage the human body and causes inflammatory diseases.
Ozone layer absorbs the harmful ultraviolet rays of the sun.
Ozone layer act as a protective shield.
During photosynthesis, plants absorb___________ and watervapour.
Carbondioxide
Natural gas
Global warming is the Increased level of
carbondioxide
Hydrogen
Which of the following does not affect ozone layer?
Cl2
CH3Cl
NO
CFCl3
