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Tree of Life
Plant Flower, Tree
Invertebrate Octopus, Ant, Bee, Butterfly, Spider, Lobster
Vertebrate Fish, Seahorse, Ray, Shark, Frog, Turtle, Tortoise, Dinosaur
Bird, Ostrich, Owl, Crow, Parrot
Mammal Bat, Rabbit, Giraffe, Camel, Horse, Elephant, Mammoth
Whale, Dolphin, Walrus, Seal, Polar Bear, Bear, Cat, Tiger, Lion, Dog, Wolf
Monkey, Chimpanzee, Human
These are organized by a classification scheme developed exclusively for Cosma. More…
desert : arid land with usually sparse vegetation
especially : such land having a very warm climate and receiving less than 25 centimeters (10 inches) of sporadic rainfall annually — Webster
Desert is a barren area of landscape where little precipitation occurs and consequently living conditions are hostile for plant and animal life. The lack of vegetation exposes the unprotected surface of the ground to the processes of denudation. About one third of the land surface of the world is arid or semi-arid. This includes much of the polar regions where little precipitation occurs and which are sometimes called polar deserts or “cold deserts”. Deserts can be classified by the amount of precipitation that falls, by the temperature that prevails, by the causes of desertification or by their geographical location. — Wikipedia
Desert climate, also known as an arid climate, is a climate in which precipitation is too low to sustain any vegetation at all, or at most a very scanty shrub, and does not meet the criteria to be classified as a polar climate.
An area that features this climate usually experiences from 25 to 200 mm (7.87 inches) per year of precipitation and in some years may experience no precipitation at all. Averages may be even less such as in Arica, Chile, where precipitation normals annually stand at around 1 mm per year. In some instances, an area may experience more than 200 mm of precipitation annually, but is considered a desert climate because the region loses more water via evapotranspiration than falls as precipitation (Tucson, Arizona, and Alice Springs, Northern Territory, are examples of this). — Wikipedia
Phys.org - latest science and technology news stories Phys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine.
How synthetic biology can help the environment
on August 15, 2019 at 12:50 pm
Most environmental science is focused on how to turn back the clock, not push it forward, says Ben Bostick, a geochemist at Lamont-Doherty Earth Observatory. "We think about how we can roll back our footprint, and not so much about how can we make our footprint bigger in a positive way," he said. "But there are many examples of synthetic biology that I think actually have a lot of potential in the environment. Think of how we can help our environment just by doing things like improving the […]
Smoke from Africa fertilizes the Amazon and...
on August 14, 2019 at 1:31 pm
A new study reveals that soluble phosphorus that fertilizes the Amazon, as well as the Tropical Atlantic and Southern oceans, is deposited through smoke from biomass fires in Africa.
UN climate report: Change land use to avoid a...
on August 8, 2019 at 6:00 pm
Human-caused climate change is dramatically degrading the Earth's land and the way people use the land is making global warming worse, a new United Nations scientific report says. That creates a vicious cycle which is already making food more expensive, scarcer and less nutritious.
Research cruise off California finds life lacking...
on August 7, 2019 at 3:40 pm
In parts of the California Current this summer, the ocean was clear, azure and almost empty.
Dinosaur egg bonanza gives vital clues about...
on August 7, 2019 at 1:29 pm
Perhaps the most amazing thing about fossils is that they don't just show us what extinct animals looked like, they can also reveal how those animals lived. Even a fossilized dinosaur egg can provide a wealth of clues about its parents' behavior.