Wastes that pose a serious threat to human and environmental health are called

1. Industrial waste
2. Chemical waste
3. Toxic waste
4. Commercial waste

Assertion (A): Large scale epidemics, increased healthcare access, home based healthcare have contributed to a rise in biomedical waste.

Reason (R): Biomedical wastes require sophisticated processing plants, incineration and disassembly centres for proper disposal.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R does not explain A.
3. A is true but R is false.
4. A is false but R is true.

What is the increase in the concentration of various toxic substances along the food chain is called ? .

1. Eutrophication
2. Bio-accumulation
3. Biomagnification
4. Demagnification

Name the phenomenon of concentrated toxic deposition at the higher trophic level.

1. Bio-accumulation
2. Biomagnification
3. Eutrophication
4. Biodegradation