What is sound wave? A sound wave in air consists of alternating zones of low and high density. The vibrating diaphragm of a loudspeaker generates such zones of alternating density. The alternating zones of low density and high-density travel to the right away from the source. However, although these density disturbances travel, the air as … Read more
What is Work? To introduce the definition of work done by a force, we begin with the simple case of motion along a straight line, with the force along the line of motion, Consider a particle moving along a straight line, say, the x-axis, and suppose that a constant force F, directed along the same … Read more
A particular organ built up of material and fetal tissue forms a connection jointly is called the placenta.
The process in which green plants prepare carbohydrate food from CO2 and H2O by their chlorophyll pigments remaining in the chloroplast with the help of solar energy is known as photosynthesis. In this process, O2 is evolved as a by-product and the simplest sugar glucose is formed.
The scientific name of an animal is binomial which means it contains two parts. This naming is also referred to as binomial nomenclature.
What is classification? Depending on their characteristics, living organisms are grouped into different taxons. This step-wise grouping is known as classification.
In nature, most food chains connect other chains. The complex food chain of more than one is known as a food web. In most cases, it is found that the same consumer can be placed in different trophic levels. This way some food chains collectively may form a net or web like structure. It is … Read more
Staring from plant source the transfer of energy by eating and being eaten up by different animals, is known as food chain.