The global average air and ocean temperatures have been gradually increasing from 1880-2010 (Fig.1) This increase in temperature melted a massive amount of ice and snow globally which ultimately, caused the global average sea level to also rise (Fig.2). The Earth’s average surface temperature rose by 0.74 ± 0.18°C over the period 1906–2005. Global average…
What is tundra? World’s coldest and driest biomes Located at latitudes 55° to 70° North( circumnavigating the North pole) 3 types of tundra: Arctic tundra, alpine tundra, and Antarctic tundra vast and treeless land which covers about 20% of the Earth’s surface cold, and the land is pretty stark low growing plants like mosses, heaths,…
What is Happening? The Greenland ice sheet is melting. The ice sheet melting will result in less saline (less dense) water entering the North Atlantic Ocean and floating on top of it instead of sinking, causing less and less deep water currents to moderate the globe’s climate, especially Northern Europe’s. Deep water currents are mainly…
At the beginning of human history, we had to satisfy our energy needs (for food, heat and movement) by using our own muscle power and gathering or hunting naturally available plants, animals and wood. Each stage in the evolution of human society (the development of farming, domestication of animals, harnessing of wind and water power)…
The Earth’s climate is always changing, fluctuating from cool temperatures to warm temperatures throughout Earth History. Climate change has become a controversial issue that scientists are sceptical about. The present cause of global warming is part of a natural variation; however it is also greatly caused by human actions. Based on the evidence that I…
SPECIES EXTINCTION Species can become extinct: Locally: A species is no longer found in an area it once inhabited but is still found elsewhere in the world. Ecologically: Occurs when so few members of a species are left they no longer play its ecological role. Globally (biologically): Species is no longer found on the earth.…