Questions

Which of the following three R's are regarded as environment friendly?

Rayon is obtained from which among thefollowing?

The warm and cold ocean currents are caused by

One of the best solutions to get rid of non­biodegradable waste is

The method of soil conservation in which different crops are grown in alternate rows and are sown at different times to protect the soil from rain wash is called?

_____________ is the number of individuals of the same species that have come into the habitat from elsewhere during the time period under consideration.

Trypsin is present in which of the following?

The method of soil conservation in which ploughing is done parallel to the contours of a hill slope to form a natural barrier for water to flow down the slop is called?