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All succulents store water in their stems, but cactuses also feature little bumps on the outside of the plant that grow spines. Cactuses require very little care, some only need to be watered every two or three months. All cactuses are succulents but not all succulents are cactuses. The sharp spines protect cactuses from animals and birds. They have spongy roots and leaves so they can hold the water they get and save it for later. They have to be able to do this because most cactuses live in hot dry areas, called deserts.
Habitats are places where plants and animals live. A habitat will provide food and water and shelter to the inhabitants. There are many different types of habitats around the world from humid hot forests to vast grasslands, from icy mountain slopes to the hottest deserts. Different habitats are home to different animals. Every organism has certain habitat needs to thrive. I habitat isn't always just based on a geographical area it can be the interior of a rotten log, a clump of moss or a single cell within a host body. Habitats can change over time because of an earthquake, a tsunami, a wildfire or because of human activities like clear-cutting forests.
Biological diversity, or biodiversity, is important to the health of the world's ecosystems. The variety within and between all species of plants, animals and microorganisms and the ecosystems where they live and interact is biodiversity. The diversity of species is not evenly distributed throughout the planet because life depends on factors like temperature, altitude, and the presence of other species. We can prove this because tropical regions support more life than polar regions. Biodiversity is important to sustaining life on earth because it prevents anyone species from throwing the balance of nature out of order. Humans affect biodiversity through habitat destruction, overkill, introduced species and overpopulation.
AZTEC Myth : Place of the Prickly Pear Cactus