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Global biodiversity is the measure of biodiversity on planet Earth and is defined as the total variability of life forms. More than 99 percent of all species [1] that ever lived on Earth are estimated to be extinct. [2][3] Estimates on the number of Earth's current species range from 2 million to 1 trillion, but most estimates are around 11 ...
Biome. One way of mapping terrestrial (land) biomes around the world. A biome (/ ˈbaɪ.oʊm /) is a distinct geographical region with specific climate, vegetation, and animal life. It consists of a biological community that has formed in response to its physical environment and regional climate. [1][2] Biomes may span more than one continent.
The blue whale is the largest animal alive today. Bruhathkayosaurus is potentially the largest animal to have walked the earth. Clockwise from top left: an African bush elephant, the largest extant terrestrial animal; a blue whale, the largest animal ever to exist; and a colossal squid, the largest invertebrate.
Dwd. Dsd. Taiga or tayga (/ ˈtaɪɡə / TY-gə; Russian: тайга́), also known as boreal forest or snow forest, is a biome characterized by coniferous forests consisting mostly of pines, spruces, and larches. The taiga or boreal forest is the world's largest land biome. [1]
Earth is the third planet from the Sun and the only astronomical object known to harbor life. This is enabled by Earth being an ocean world, the only one in the Solar System sustaining liquid surface water. Almost all of Earth's water is contained in its global ocean, covering 70.8% of Earth's crust.
Habitat can be defined as the natural environment of an organism, the type of place in which it is natural for it to live and grow. [4][5] It is similar in meaning to a biotope; an area of uniform environmental conditions associated with a particular community of plants and animals.
Over 1.5 million living animal species have been described—of which around 1 million are insects—but it has been estimated there are over 7 million in total. Animals range in size from 8.5 millionths of a metre to 33.6 metres (110 ft) long and have complex interactions with each other and their environments, forming intricate food webs.
Over 1.5 million living animal species have been described, of which around 1.05 million are insects, over 85,000 are molluscs, and around 65,000 are vertebrates. It has been estimated there are as many as 7.77 million animal species on Earth. Animal body lengths range from 8.5 μm (0.00033 in) to 33.6 m (110 ft).