the process by which the surface of the earth is worn away by the action of water, glaciers, winds, waves, etc.
in a food web the cascading effect that a change in the size of one population in the web has on the populations below it.
animal home or ecosystem
a system, or a group of interconnected elements, formed by the interaction of a community of organisms with their environment.
plant and meat eater
diversity among and within plant and animal species in an environment.
pertaining to life
of or characterized by the absence of life or living organisms.
An invasive species is a plant, fungus, or animal species that is not native to a specific location, and which has a tendency to spread to a degree believed to cause damage to the environment, human economy or human health.
an organism, as a plant, that is able to produce its own food from inorganic substances.
an organism, usually an animal, that feeds on plants or other animals.
an organism, usually a bacterium or fungus, that breaks down the cells of dead plants and animals into simpler substances.
the state or quality of being stable
a distinguishing feature or quality
a form of life composed of mutually interdependent parts that maintain various vital processes.
gives birth to live young and not laying eggs
any of various cold-blooded, aquatic vertebrates, having gills, commonly fins, and typically an elongated body covered with scales.
a tree that bears cones and evergreen needlelike or scalelike leaves. Conifers are of major importance as the source of softwood, and also supply resins and turpentine
shedding the leaves annually, as certain trees and shrubs.
ferns have a vascular system for the transport of water and nutrients
a plant that produces flowers, fruit, and seeds; angiosperm.
the use of land for growing only one type of crop.
the action or process of classifying something according to shared qualities or characteristics:
a group of interdependent organisms of different species growing or living together in a specified habitat:
the way in which each of two or more things is related to the other or others:
an animal of a large group distinguished by the possession of a backbone or spinal column, including mammals, birds, reptiles, amphibians, and fishes.
an animal lacking a backbone, such as an arthropod, mollusk, annelid, coelenterate, etc. The invertebrates constitute an artificial division of the animal kingdom, comprising 95 percent of animal species and about 30 different phyla
no longer in existance; that has ended or died out