What are the major features of Antarctica?
Antarctica is almost completely covered by an ice sheet. At its thickest, the ice is over 4 km deep. Beneath the ice sheet is a hidden landscape of mountains, valleys and plains. Antarctica’s dome-shaped ice sheet has been formed by snow.
Why is Antarctica’s ecosystem important?
Polar Discovery :: Antarctica :: Ecosystem. Antarctic seas are extremely productive because phytoplankton grows abundantly during the extended daylight of summer and feeds huge populations of krill. Krill, shrimplike crustaceans, are a key animal in this ecosystem, as food for top predators: whales, penguins, and seals …
What is the name of the ecosystem in Antarctica?
The Antarctic realm is one of eight terrestrial biogeographic realms. The ecosystem includes Antarctica and several island groups in the southern Atlantic and Indian oceans.
What are 3 physical features?
Landforms, bodies of water, climate, soils, natural vegetation, and animal life are among them. Physical features are including landforms, bodies of water, terrains, and ecosystems.
What are the ecosystems?
An ecosystem is a geographic area where plants, animals, and other organisms, as well as weather and landscape, work together to form a bubble of life. Ecosystems contain biotic or living, parts, as well as abiotic factors, or nonliving parts. … Abiotic factors include rocks, temperature, and humidity.
Where is the Antarctic ecosystem located?
The Antarctic region comprises the continent and surrounding sea south of the Antarctic Convergence, where cold Antarctic upper water sinks and mixes with warmer sub-Antarctic water. The continent, nearly centered on the South Geographic Pole, is isolated by the Southern Ocean from other land masses.
What is the main ecosystem in the Arctic?
The Arctic consists of taiga (or boreal forest) and tundra biomes, which also dominate very high elevations, even in the tropics. Sensitive ecosystems exist throughout the Arctic region, which are being impacted dramatically by global warming.
What makes the Antarctic an extreme environment?
Everything about Antarctica is extreme. South Pole winter temperatures average around minus 70 degrees Fahrenheit, and coastal winds can reach 200 miles an hour, powering violent blizzards that last a week at a time. Still scientists come, because the last frontier offers data they can’t get anywhere else.
What is a characteristic of the polar sea ecosystems?
Characteristics of polar environments—the climate, substrates, elevation above sea level, slope, exposure, and proximity to other landmasses—determine the complex of plant and animal life present in the polar regions.