Keystone species are organisms that other species in the ecosystem depend upon and whose disappearance would devastate their biological communities. Learn how to define keystone species and review examples of why they are vital to their ecosystems. Related...
The Amazon rainforest consists of around two million square miles located in northern South America, and some researchers estimate this rainforest is home to nearly one-third of all animal species found in the world. There are millions of different species of animals in the Amazon rainforest ...
An area of the Amazon Rainforest in Brazil. The tropical rainforests of South America contain the largest diversity of species on Earth.[57][58] Life, as it is currently understood, is only known to exist on the planet Earth. The origin of life is still a poorly understood process, but...
The Amazon River and its surrounding rainforest are home to some of the most diverse ecosystems on the planet. The Amazon rainforest is home to millions of species of plants, animals, and insects, many of which are found nowhere else on earth. The river itself provides habitat for a wide...
forest ecosystems among the Earth’s terrestrial ecosystems. In tropical rainforests, there are still an incredible number of biological and natural laws that have not been fully understood. In particular, little is known about the remarkable richness of tropical rainforest species and the geographical...
When carbon sinks are damaged or destroyed (for instance, as fires rage in theAmazon rainforestor when excess carbon in the ocean causes the water tobecome acidic), these ecosystems may stop absorbing carbon altogether and even emit stored carbon back into the atmosphere. Ocean warming, for ins...
Scientists have said crossing the 1.5°C threshold risks unleashing far more severe climate change effects on people, wildlife and ecosystems.科学家指出，升温幅度超过1.5摄氏度意味着人类、野生动植物和生态系统都可能遭受气候变化带来的更严重后果。Preventing it requires almost halving global CO2 emissions ...
The Amazon rainforest is responsible for recycling a large portion of the world's carbon dioxide into breathable oxygen. Without it, the world's ecosystems would collapse. This makes the rapid deforestation of the Amazon a major problem.
Forests are diverse ecosystems that can exist in various climates, ranging from the cold boreal forests near the Arctic to the temperate forests found in many regions around the world. They are characterized by their tree coverage, which can vary in density, species, and size. Rainforests, on ...
A functional unit in ecology comprised of both biotic and abiotic components. Desert ecosystems are adapted to extreme temperatures and scarce water. 7 Biosphere The zone of life on Earth, a closed (mostly self-regulating) system. Human activities are causing measurable changes in the biosphere. ...