A green photosynthetic pigment found in plants, algae, and cyanobacteria (blue-green algae) that help convert carbon dioxide to carbohydrates and oxygen.
The tendency of a chemical to remain in the environment without
transformation or breakdown into another chemical form. It refers to the length of time a chemical is expected to reside in the environment and be available for exposure.
A canopy is the overhead shade and layers of foliage provided by trees and shrubs in forests and woodlands. A canopy may have a single layer, or many. The uppermost layer in a forest is called the crown canopy.
A single layer of cells between the woody part of the tree and the bark. Division of these cells results in diameter growth of the tree through formation of wood cells (xylem) and inner bark (phloem).
Biome is a term that describes areas on the earth with similar climate, plants, and animals on a global scale. Biomes are classified according to the predominant vegetation and characterized by adaptations of organisms (e.g. aquatic, forest, and grassland biomes).
