Birds avoid migrating to places where noise level is above …………….. .

1. 100 dB
2. 90 dB
3. 150 dB
4. 140 dB

The process of depletion of oxygen from water bodies occurring either naturally or due to human activities.

1. Biomagnification
2. Eutrophication
3. Bioaccumulation
4. Pollution

The phenomenon of concentrated toxic deposition at the higher trophic level is known as:

1. Biomagnification
2. Eutrophication
3. Bioaccumulation
4. Pollution

Name the disease which resulted in numbness of body parts, vision and hearing problems and abnormal mental behaviour in Japan.

1. Corona Virus
2. Minamata
3. Encephalitis
4. Fluorosis