Here is an essay on snakes. Snakes are a very specialised group of Reptiles under order Ophidia. Nearly 3,000 species of snakes are now found in the tropical and sub-tropical parts of the world. Out of these about 300 are Poisonous and others are Non-Poisonous. WHO has estimated that thirty to forty thousand people die annually of snake bite. Snakes [...]
In this essay we will discuss about mosquitoes. After reading this essay you will learn about: 1. Introduction and Economic Importance of Mosquitoes 2. General Organisation of Mosquitoes 3. Life-History 4. Prevention against Mosquitoes. Introduction and Economic Importance of Mosquitoes: The mosquitoes are insects which belong to the order Diptera. These nocturnal insects are well-known as vectors of various disease [...]
In this article we will discuss about the external and internal anatomy of earthworm. This will also help you to draw the structure and diagram of earthworm. External Anatomy of Earthworm: The body of Pheretima is nearly circular in cross-section and varies from 7 to 8 inches (18-19 cms) in length. The general colour of the body is brown but [...]