Science

• Humans become capable of reproduction after puberty sets in. Between the ages of 11 years and 19 years children...

• There are two modes by which animals reproduce. These are: (i) Sexual reproduction, and (ii) Asexual reproduction• Reproduction resulting...

• Cell: The smallest structural and functional unit of an organism, which is typicallymicroscopic and consists of cytoplasm and a...

• Biodiversity: Occurrence of innumerable number of different types of organisms and the whole range of their varieties (biotypes) adapted...

• Combustion: The process of burning a substance in the presence of air (oxygen) and undergoes a chemical reaction to...

• Natural Resources: Resources include everything provide by the nature. They form the wealth of a country.• Types of Natural...

• Metals are lustrous whereas non-metals have no lustre.• Generally, metals are malleable and ductile. Non-metals do not have these...

• Synthetic fibres and plastics, like natural fibres, are made of very large units called polymers. Polymers are made up...

• Microorganisms: Microorganisms are too small and are not visible to the unaided eye.• They can live in all kinds...