Describe briefly about Pollution and its types.

What is Pollution ? Pollution is an undesirable change in the physical, chemical and biological characteristics of environment. It is harmful to human life and other organisms. Agents causing pollution are known as pollutants. Or It is the addition of unwanted constituents to air, water or land, which deteriorates the natural quality of the environment. … Read more

How to control the growth of Human Population ? Reasons and Control

Human Population may be defined as a group of organisms belonging to one species which occupy a given area. It has characteristics which are a function of the whole group and not of the individuals. These are population density, birth rate, death rate, age distribution, biotic potential, rate of dispersion and growth form. Although individuals are … Read more

Describe the role of kidney as a part of Excretory System.

As a result of the complex chemical reactions taking place within the body, certain metabolic waste products are formed. For example : large amounts of CO2 and water are produced from metabolism of carbohydrates, fats and proteins. We are going to discuss about Excretory System, products from Excretory System & structure of kidney. Ammonia, urea … Read more

RBCs, WBCs and Blood Platelets : Types and Functions

Formed (cellular) elements Formed (cellular) elements (RBCs, WBCs and Platelets) are shaped structures visible under the microscope as cells and cell-like structures present in the blood. They form 42 – 45% of blood. These are of three types i.e., Red Blood Cells (RBCs) or Erythrocytes. White Blood Cells (WBCs) or Leucocytes. Blood platelets or Thrombocytes. … Read more

What are the five types of Plant Harmones ? Here is the Full answer.

Growth is one of the most fundamental characteristics of all living organisms. We are going to discuss about Plant Hormones : Auxins, Gibberellins, Cytokinins, Ethylene and Abscisic Acid. It is the net result of various processes that together cause an irreversible permanent increase in the size of an organism or its parts. In plants, growth take … Read more