What are the Types of Crop RotationThe growing of different crops on a piece of land in a pre-planned succession is called crop rotation. Depending upon the duration, crop rotation may be of following three types : 1. One year rotation   Maize – MustardR…

Cells: Variation in Number, Shape, and SizeAll living things carry out certain basic functions with the help of different sets of organs. Cells are called the structural unit of an organ. These may be compared to the bricks of a wall. As bricks are assem…

Do all Animals have the Same Respiratory SystemRespiratory system in animals The basic process of respiration is similar in all plants and animals, and results in the release of energy. In unicellular animals, oxygen is directly absorbed from the water …

How does a Flowering Plant ReproduceSexual Reproduction : The formation of new plants through the fusion of male and female gametes is called sexual reproduction. Sexual reproduction is carried out only in flowering plants. Flowers are the reproductive …

Adaptation of Animals to Different ClimatesClimate differs from place to place. That is why, animals have special characteristics that enable them to live in a particular climate. These special characteristics are called adaptations. Adaptations can be …

How does the Air Travel Through the Respiratory SystemRespiratory system in humans Humans, like many other land animals with backbones, breathe in oxygen-rich air and breathe out carbon dioxide-rich air with the help of lungs. Lungs are present inside o…

What is the Difference between Breathing and RespirationRespiratory system All living organisms are made up of a number of cells. Each of these cells requires oxygen to break down food and obtain energy. The intake of air rich in oxygen is the first ste…

What are the Factors that Contribute to Soil FormationThe top surface layer of this exposed, solid part of crust containing weathered minerals and humus and capable of supporting plant growth is called soil.Soil Formation The process of soil formation i…

Is Polyester Synthetic or ArtificialFibres that are made by human beings are called syntheticfibres. Most synthetic fibres are obtained from coal, petroleum, and natural gas. Rayon, nylon, polyester, acrylic, and spandex are examples of synthetic fibres…

What is Viviparous ReproductionViviparous and Oviparous AnimalsBased on how they produce offspring, animals can be divided into the following two types. Viviparous animals: Animals that give birth to live offspring (i.e., babies) are called viviparous a…