التعريف: A color hue with medium-low wavelength of that portion of the visible spectrum lying between yellow and blue, evoked in the human observer by radiant energy with wavelengths of approximately 490 to 570 nanometers.
التعريف: A hard, thorny or needle-like structure which occurs on various organisms. Animals such as porcupines and sea urchins grow spines as a self-defense mechanism
التعريف: a tropical monocot tree relying for support on overlapping leaves wrapping around the stem, thickened parenchyma cells, and prop or brace roots
التعريف: This organism produces this material or substance, either during its life or after death. A produces B if some process that occurs in A has output B.
التعريف: A group of species that exploit the same food resources, and/or use the same feeding or foraging methods. http://en.wikipedia.org/wiki/Guild_(ecology)
