Questions

An operating system is a program that acts as an intermediary between the user and the computer hardware. The purpose of an OS is to provide a convenient environment in which user can execute programs in a convenient and efficient manner. It is a resource allocator responsible for allocating system resources and a control program which controls the operation of the computer hardware.

Plants grow in size both in height and in girth. Enlargement of cells already present cannnot contribute much to the growth. Only addition of more and more cells could increase the size of the plant considerably.

The 828-metre (2,717 ft) tall Burj Khalifa in Dubai has been the tallest building since 2008.

Permanent hardness of water may be removed by the addition of Sodium Carbonate.

The Mesoamerican leader Pakal, The great was the king of a Maya city-state in the history.

C3 plants are plants that undergo C3 photosynthesis, which means that they undergo the Calvin cycle (converting carbon dioxide into energy) in their chloroplasts and typically keep their stomata open during the day. These are the most common types of plants.

In C3 plants the conservation of water promotes Photorespiration.

Process by which sediment is removed from its source is called Erosion.