The equation for determining the stomatal index (1) is, 1=S/E+Sx100. Where S=the number of stomata, E=total number of epidermal cells in a unit area of the leaf. Oats contain 54,000 per one square inch, but cucumber contains 428,000 per square inch.
Iceland is an island in the Atlantic Ocean, located near the Arctic Circle, between Greenland and Norway. An island of 103.000 km2 (40,000 square miles), it is about the same size as Hungary and Portugal, or Kentucky and Virginia. Iceland is the second largest island in Europe, following Great Britain, and the 18th largest island in the world.
Approximately 7,250 sq. km (2,799 sq. mi) of Iceland is covered by glaciers. HvannadalshnjÃºkur is Icelandâs highest peak (2,110m / 6,923 ft) Ãskjuvatn near VÃ­ti is Icelandâs deepest lake (220m / 722 ft) For almost three months in summer there is continuous daylight, a phenomenon known as the midnight sun.