Reabsorbtion. Occuring more commonly within the nephron system than filtration, this is a form of active transport which takes the the useful substances for the body from the tubules and places them back into the blood filled capillaries.
Oleanders are shrubs, but they are _big_ shrubs. Most of the varieties in cultivation top out at 8 to 12 feet tall and about the same width. The wild form, and some of the older cultivars used for windbreaks top out at 20 x 20 feet.
Oleander Plants. The oleander tree can also grow as a bush, depending on the cultivar selected. This evergreen flowering plant grows well in zones 8,9, and 10, and is very salt water tolerant, flowering in many color shades of yellow, white and purple.leander Trees offer evergreen beauty and vibrant colors. Very beautiful trees that grow up to 25 feet tall in large clumps, but in Europe certain cultivars form a single trunk.