Compound which can cause acid rain is
sulphurdioxide
copper oxide
both a and b
none of these
Aestivation is during
summer
winter
monsoon
autumn
Birds excrete
urea
ammonia
nitrates
uric acid
________ are absent in areas with with water scarcity.
Tall trees
Bushy plants
Herbs
Shrubs
Most of the forests are seen in
Areas with sufficient water
Areas with water scarcity
Both a and b
Fats when oxidise produce
More water
Less water
Do not produce water
All the above
Animals like fishes, amphibians and reptiles are
Homoeothemic
Poikilothermic
Exothermic
Endothermic
Which of the following pollutants damages the nervous system?
carbon
lead
oxygen
In a pond ecosystem, diatoms are
decomposers
primary producers
primary consumers
secondary consumers
The pollutant present in coalmine exhaust is
carbon monoxide
carbondioxide
water vapour
ash
