Plants
Different plant species are necessary in each of four depth-zones.
- 0–20 centimetres (0–7.9 in)
- 40–60 centimetres (16–24 in)
- 60–120 centimetres (24–47 in)
- Greater than 120 centimeters (47 in)
Read more about this topic: Organisms Used In Water Purification
Famous quotes containing the word plants:
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Is by his hand alone that guides nature and fate.”
—Anne Bradstreet (c. 1612–1672)
“We have been God-like in our planned breeding of our domesticated plants and animals, but we have been rabbit-like in our unplanned breeding of ourselves.”
—A.J. (Arnold Joseph)
“Luxurious Man, to bring his Vice in use,
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—Andrew Marvell (1621–1678)