The waste water from households, restaurants, industries and all other places is:

Dietary fibres that may not get digested in your digestive system is known as:

You need sleep to:

Which of the following is not a healthy practice?

The state of complete physical, mental and social well-being, and not merely the absence of disease is known as:

Protective food:

Lack of intake of nutrients can cause:

Burning of fossil fuels can cause which type of pollution?

The hardest substance in the body is:

The immediate help given to the victim before taking him to the hospital is: