In metric terms a square foot is a square with sides 0.3048 metres in length. One square foot is the equivalent to 0.09290304 square metres. Common references: The six floors of the White House (Washington D.C., U.S.A.) have a combined floor-space area of approximately 55,000 square feet.
Description: Volvox is a green algae and the culmination of the volvocine line. It is a hollow sphere made up of a single layer of 500-60,000 biflagellate cells. The flagella beat so as to turn the volvox in circles and therefore propel the spheres in water. Volvox is also polar.
Straddling the plant and animal kingdoms, the protist Volvox forms stunning bright green colonial balls in water bodies that are enriched in nitrates. Found in puddles, ditches, shallow ponds and bogs, Volvox colonies reach up to 50,000 cells and may include daughter and granddaughter colonies.