Questions

The law of conservation of mass states that in any closed system the mass of the system is neither created nor destroyed over time i.e, the mass cannot be changed overtime.

Hence, the given statement is true.

A cytoskeleton acts as a frame that gives a cell its shape, protects it to an extent, and helps with cellular motion.

Sewage treatment generally involves three stages, called primary, secondary and tertiary treatment.

Primary treatment consists of temporarily holding the sewage in a quiescent basin where heavy solids can settle to the bottom while oil, grease and lighter solids float to the surface. This removes material that will either float or readily settle out by gravity. It includes the physical processes of screening, comminution, grit removal, and sedimentation.

Secondary treatment removes the soluble organic matter that escapes primary treatment. It also removes more of the suspended solids. Removal is usually accomplished by biological processes in which microbes consume the organic impurities as food, converting them into carbon dioxide, water, and energy for their own growth and reproduction.

Tertiary treatment includes removal of nutrients such as phosphorus and nitrogen and practically all suspended and organic matter from waste water.

Climatology is a study of climate which is subspecialty of environmental science studies.

The three main functions of Kidneys are ::

* Regulating and filtering minerals from blood.

* Maintaining overall fluid balance.

* Filtering waste materials from food, medications, and toxic substances.

The 2nd largest consumer and importer of the LPG in the worldis India.

Kelvin temperature scale is the temperature scale that is based upon absolute zero.