Which sector is the largest emitter of greenhouse gases in India?
transport
domestic
agricultural
electric power generation
Total earth's surface covered by water is
75%
60%
85%
50%
What happens when rain falls on soil without vegetational cover?
Rain water percolates in soil efficiently
Rain water causes loss of surface soil
Rain water leads to fertility of the soil
Rain water does not cause any change in soil
Which of the following element's oxides contribute to acid rains?
silicon
sodium
oxygen
carbon
What compounds are identified as contributing to acid rain?
carbon dioxide
sulphur oxides
mercury oxides
phosphates
Climate change may impact
agriculture natural terrestrial ecosystems and water resources
air quality oceans, and coastal zones
energy and human health
all of the above
Bacterium drives the ________ cycle.
nitrogen
energy
An increase in carbondioxide content in the atmosphere would not cause
more heat to be retained by the environment
increase in photosynthesis in plants
global warming
abundance of desert plants
Oxygen is returned to the atmosphere mainly by
burning of fossil fuel
respiration
photosynthesis
fungi
Soil erosion can be prevented by
raising forests
deforestation
excessive use of fertilizer
overgrazing by animals
