Search results
Results from the WOW.Com Content Network
As a result, the plant's appearance varies; the female catkins are red-coloured, while the male catkins are yellow-coloured. [5] [6] Despite its small size, it is a long-lived plant, growing extremely slowly in the severe arctic climate; one in eastern Greenland was found to be 236 years old. [5] Hybrids with Salix arcticola and Salix glauca ...
Silene acaulis, known as moss campion [2] or cushion pink, is a small wildflower that is common all over the high arctic and tundra and in high mountains of Eurasia and North America (Alps, Carpathians, southern Siberia, Pyrenees, British Isles, Iceland, Faroe Islands, Greenland, Rocky Mountains).
The cushion plant form is not endemic to any single area or plant family. About 338 species worldwide in 78 genera in areas ranging from Tasmania , New Zealand , and Tierra del Fuego to the arctic tundra of Svalbard have convergently evolved the same plant form in response to similar environmental conditions.
Animals range in size from 8.5 millionths of a metre to 33.6 metres (110 ft) long and have complex interactions with each other and their environments, forming intricate food webs. The study of animals is called zoology.
Arctic vegetation is largely controlled by the mean temperature in July, the warmest month. Arctic vegetation occurs in the tundra climate, where trees cannot grow.Tundra climate has two boundaries: the snow line, where permanent year-round snow and ice are on the ground, and the tree line, where the climate becomes warm enough for trees to grow. [7]
More than 99 percent of all species, amounting to over five billion species, [7] that ever lived on Earth are estimated to be extinct. [8] [9] Estimates on the number of Earth's current species range from 10 million to 14 million, [10] of which about 1.2 million have been documented and over 86 percent have not yet been described. [11]
Iguanas vary considerably in size and form, but even the smallest lizards in this family are still quite large. Many sources describe the green iguana ( Iguana iguana ) as the largest iguanid , often reaching lengths up to 1.5 metres (4.91 ft) and masses of 4 kg (8.8 lb), [ 75 ] and with a maximum length of 2 m (6.6 ft) and a mass of 8 kg (18 ...
Arundo donax is a strong candidate for use as a renewable biofuel source because of its fast growth rate and its ability to grow in different soil types and climatic conditions. A. donax will produce an average of three kilograms of biomass per square metre (12 tons per acre/year) once established. [ 40 ]