71.
Gharial is a

72.
At what time during a 24-hour day would a radiation temperature inversion best be developed?

73.
Animal dung is __________ waste.

74.
Normally rain water is slightly

75.
_________ causes loss of water because of seepage of water into the soil.

76.
Which of the following projects contribute to displacement?

77.
_______ is a marine tortoise which shows the unique phenomenon "arribada".

78.
Which chemical was responsible for Bhopal gas tragedy?

79.
Complex interlinked food chains are called

80.
_________ layer is very near to earth