General Science Questions

Forest habitat and soil are conserved through selective logging, in which only some trees in an area of forest are cut.

The head mirror used by ENT doctors is concave.

The main source of organic matter in soil is the plant and animal tissue that decompose at each level of breakdown.

Mortar is a mixture of cement or lime as a binder, sand and water.

The nutrients that provide energy are carbohydrates, proteins and vitamins. The other three nutrients--vitamins, minerals, and water do not provide energy.

The Indian Navy operates three operational Commands. They are

1. Western Naval Command - Mumbai

2. Eastern Naval Command  - Vishakhapatnam

3. Southern Naval Command - Kochi

In all the above given options, there is no chemical change or reactions takes place only the shape or physical state is changed.

Short term side effects of alcohol and other drugs include forgetfulness, temporary blindness and disrupted sleep.