Human Activities and Regional Environment

Which of the following is the traditional rainwater harvesting system in Rajasthan?

Khadin is a traditional water harvesting system in Tamil Nadu.

Write a note on Khadin.

_____ is a barrier across flowing water that obstructs, create, or retard the flow often creating a reservoir, lake or impoundment.

Which one of the following is not an adverse effect of dams?

Due to which of the following reasons are rooftop rainwater harvesting commonly practised, particularly in Rajasthan?

Identify the environmental effects caused due to big dams:

Large scale deforestation will cause:

Large scale deforestation decreases _____.

Water plays a critical role in regulating the body temperature but cannot help to maintain blood pressure.

Construction of big dams does not help in inland navigation, fishery, etc.

Rainwater harvesting is done to supplement the ground-water supplies during the lean season.

Identify the incorrect statements with respect to big dams.

Which of the following statement/s regarding deforestation is/are correct?

In Cherrapunji where the annual rainfall is more than $1100$ cm, there is no shortage of drinking water.

A dam of water reservoir is built thicker at bottom than at the top because:

Name the state of India where 'tankas'(underground tanks) is used for traditional rainwater harvesting technique.

Khadin is a _____ rainwater harvesting system in Rajasthan

The construction of a dam on a river can block or delay upstream fish migration.

The average annual rainfall for the whole of India is _____.