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Numbers are given in global hectares per capita. The world-average ecological footprint in 2016 was 2.75 global hectares per person (22.6 billion in total). With a world-average biocapacity of 1.63 global hectares (gha) per person (12.2 billion in total), this leads to a global ecological deficit of 1.1 global hectares per person (10.4 billion ...
Category. v. t. e. An ecosystem (or ecological system) is a system that environments and their organisms form through their interaction. [2] : 458 The biotic and abiotic components are linked together through nutrient cycles and energy flows. Ecosystems are controlled by external and internal factors.
Environmental science is an interdisciplinary academic field that integrates physics, biology, meteorology, mathematics and geography (including ecology, chemistry, plant science, zoology, mineralogy, oceanography, limnology, soil science, geology and physical geography, and atmospheric science) to the study of the environment, and the solution ...
The five most abundant greenhouse gases in Earth's atmosphere, listed in decreasing order of average global mole fraction, are: [5] [6] water vapor, carbon dioxide, methane, nitrous oxide, ozone. Other greenhouse gases of concern include chlorofluorocarbons (CFCs and HCFCs ), hydrofluorocarbons (HFCs), perfluorocarbons, SF. 3.
Per capita emissions in India are low for its huge population. But overall the country is the third largest emitter of CO 2 and fifth largest economy by nominal GDP in the world. Assuming a global population of around 9–10 billion by 2050, a carbon footprint of about 2–2.5 tonnes CO 2 e per capita is needed to stay within a 2 °C target.
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. A biome encompasses multiple ecosystems within its boundaries.
A map of the bioregions of Canada and the US. An ecoregion ( ecological region) is an ecologically and geographically defined area that is smaller than a bioregion, which in turn is smaller than a biogeographic realm. Ecoregions cover relatively large areas of land or water, and contain characteristic, geographically distinct assemblages of ...
Glossary of environmental science. This is a glossary of environmental science . Environmental science is the study of interactions among physical, chemical, and biological components of the environment. Environmental science provides an integrated, quantitative, and interdisciplinary approach to the study of environmental systems.