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Aerogels may be used to separate oil from water, which could for example be used to respond to oil spills. [104] [81] [76] Aerogels may be used to disinfect water, killing bacteria. [105] [106] Aerogel can introduce disorder into superfluid helium-3. [107] In aircraft de-icing, a new proposal uses a carbon nanotube aerogel. A thin filament is ...
Used for early versions of animals and plants. Examples: ... Used for organisms found in the Southern Hemisphere. Examples ... Philodendron ("loving trees")-phyton ...
Juglone is an example of such a molecule inhibiting the growth of other plant species around walnut trees. [ citation needed ] The aquatic vascular plant Myriophyllum spicatum produces ellagic , gallic and pyrogallic acids and (+)- catechin , allelopathic phenolic compounds inhibiting the growth of blue-green alga Microcystis aeruginosa .
Storage organs may act as perennating organs ('perennating' as in perennial, meaning "through the year", used in the sense of continuing beyond the year and in due course lasting for multiple years). These are used by plants to survive adverse periods in the plant's life-cycle (e.g. caused by cold, excessive heat, lack of light or drought).
A water-purifying plant (Iris pseudacorus) in growth after winter (leaves die at that time of year) The choice of plants in engineered wet-lands or managed lagoons is dependent on the purification requirements of the system and this may involve plantings of varying plant species at a range of depths to achieve the required goal.
As stems and roots mature lenticel development continues in the new periderm (for example, periderm that forms at the bottom of cracks in the bark). [citation needed] Lenticels are found as raised circular, oval, or elongated areas on stems and roots. In woody plants, lenticels commonly appear as rough, cork-like structures on young branches.
Trees located in areas with animals such as beavers are vulnerable since beavers chew off the bark at a fairly precise height. This process is known as girdling, or ring-barking, and can be used for agricultural purposes. For example, enormous fruits and vegetables seen at fairs and carnivals are produced via girdling.
The leaves of grasses and palms being elongate and parallel-veined are very commonly used for building. These, along with palm fibers and horse-hair fern are used to build hanging baskets. Wooden twigs form the greater proportion of materials used in the nests of large birds. Plants and trees not only provide resources but also sites.