<P> There are two different terms to describe habitats: ecosystem and biome . An ecosystem is a community of organisms interacting with its environment . In contrast, biomes occupy large areas of the globe and often encompass many different kinds of geographical features, including mountain ranges . </P> <P> Biotic diversity within an ecosystem is the variability among living organisms from all sources, including inter alia, terrestrial, marine and other aquatic ecosystems . Living organisms are continually engaged in a set of relationships with every other element constituting the environment in which they exist, and ecosystem describes any situation where there is relationship between organisms and their environment . </P> <P> Biomes represent large areas of ecologically similar communities of plants, animals, and soil organisms . Biomes are defined based on factors such as plant structures (such as trees, shrubs, and grasses), leaf types (such as broadleaf and needleleaf), plant spacing (forest, woodland, savanna), and climate . Unlike ecozones, biomes are not defined by genetic, taxonomic, or historical similarities . Biomes are often identified with particular patterns of ecological succession and climax vegetation . </P> <P> A landform comprises a geomorphological unit and is largely defined by its surface form and location in the landscape, as part of the terrain, and as such is typically an element of topography . Landforms are categorized by features such as elevation, slope, orientation, stratification, rock exposure, and soil type . They include berms, mounds, hills, cliffs, valleys, rivers, and numerous other elements . Oceans and continents are the highest - order landforms . </P>

What geographic features could also be natural resources in india