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For example, it was estimated in 2007 that up to 30% of all species will be extinct by 2050. [4] Destroying habitats for farming is a key reason why biodiversity is decreasing today. Climate change also plays a role. [5] [6] This can be seen for example in the effects of climate change on biomes.
This forms an important part of the evidence on which evolutionary theory rests, demonstrates that evolution does occur, and illustrates the processes that created Earth's biodiversity. It supports the modern evolutionary synthesis—the current scientific theory that explains how and why life changes
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 ...
Biocentrism (from Greek βίος bios, "life" and κέντρον kentron, "center"), in a political and ecological sense, as well as literally, is an ethical point of view that extends equal inherent value to all living things. [1] It is an understanding of how the earth works, particularly as it relates to its biosphere or biodiversity.
Species richness, or biodiversity, increases from the poles to the tropics for a wide variety of terrestrial and marine organisms, often referred to as the latitudinal diversity gradient. [1] The latitudinal diversity gradient is one of the most widely recognized patterns in ecology. [1] It has been observed to varying degrees in Earth's past. [2]
[13] [15] [16] Biodiversity plays an important role in ecosystem services which by definition maintain and improve human quality of life. [14] [17] [18] Conservation priorities and management techniques require different approaches and considerations to address the full ecological scope of biodiversity.
The Earth has many diverse ecosystems and ecologicalsystem diversity. These are NASA composite images of the Earth: 2001 (left), 2002 (right), titled The Blue Marble. Ecosystem diversity deals with the variations in ecosystems within a geographical location and its overall impact on human existence and the environment.
The biosphere (from Ancient Greek βίος (bíos) 'life' and σφαῖρα (sphaîra) 'sphere'), also called the ecosphere (from Ancient Greek οἶκος (oîkos) 'settlement, house' and σφαῖρα (sphaîra) 'sphere'), is the worldwide sum of all ecosystems. It can also be termed the zone of life on the Earth.
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