causes of infectious diseases<br />Means of Spreading Diseases - Carrier and Vectors<br />what is disease<br />types of diseases class 9<br />CBSE Class 9 Biology, Diversity in Living Organisms. A distinct name is a need for identification. Taxonomic hierarchy is the framework of classification which helps in appropriate placing of organisms. These are prokaryotic, unicellular, autotrophic or heterotropic organisms.
