Key is a taxonomical aid that helps in identification of plant and animal species. These keys are based on similarities and dissimilarities in characters, generally in a pair called couplet. Each statement...
Introduction: Anything that occupies space and has mass is called matter. Matter can be divided into two types. Pure substance: It consists of single types of particles which are identical and same...
How to prepare for the CBSE Class 12 Board Exam? In this lesson, I will teach you how to prepare for the CBSE Class 12 Board Exam. Your class 12 board exam is probably the most important exam in your...