61.
Most common disease of poultry in India is

62.
Most abundant tissues of our body are

63.
Mumps is a disease caused by

64.
Rain water helps to increase the ____ to some extent.

66.
Plants are killed in winter by frost

67.
One of the following is most suitable for study of mutations

68.
Pulses are a good source of

69.
Oxygen in our blood is transported by a protein named

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