More than 5,000 square miles (13,000 square km) of the highlands' total extent of 30,000 square miles (78,000 square km) lie above 3,000 feet (900 metres).
The common chiffchaff has an enormous range, with an estimated global extent of 10 million square kilometres (3.8 million square miles) and a population of 60 120 million individuals in Europe alone.
However, in the Antarctic there was a new record maximum extent of 19.72 million square kilometres on 24 September, exceeding the previous record of 19.59 million square kilometres, which occurred on 24 September 2006.
Arctic ice hit a record-low maximum extent of 5.6 million square miles this March, following an exceedingly warm winter.
He predicted the imminent break-up of sea ice in summer months in 2007, when the previous lowest extent of 4.17 million square kilometres was set.
The common house martin has a large range, with an estimated global extent of 10 million square kilometres.
We found that the spatial variability of groundwater storage anomalies (deviations from the long term mean) increases as a power function of extent scale (square root of area).
The data center said on Wednesday that sea ice in the Arctic had reached maximum extent, of about 5.5 million square miles, on March 7.
The ice, which is now expanding as the sun dips toward the horizon for the winter, hit a minimum extent of about 1.74 million square miles on Sept. 12, said Walter Meier, a research scientist at the center.
Numbers of SBCs or extent of nuclear dust per square millimeter was determined by dividing the counted numbers by the epidermal surface area and calculating the mean value of the three sections.
These oceanic waters have such a vast extent of 15 to 30 million square kilometres (6 to 12 million square miles) that each bird has more than a square kilometre at its disposal and it is unsurprising that they are seldom seen out at sea.
