Science 15

a cycle that replaces minerals and other nutrients in the environment

what are the three major processes in the hydrogen cycle

within an organism's tolerance range for temperature or for another factor is an ideal range

bacteria and fungi that feed on detritus by secretin enzymes that break it down into simpler molecules

like decomposer except they help to break it down into smaller pieces and speed up the process of decay

model used by ecologist to show the nutritional relationships among organisms in an ecosystem

model used by ecologists to show all  possible feeding relationships at each trophic level

shows energy transferred from one trophic level to the next.

represents the total mass of living matter per unit area

represents the number of organisms at each trophic level and shows the population size usually decreases at each higher trophic level

organisms living in close association with one another in a type of relationship

A type of symbiosis with a relationship in which both organisms benefit

Symbiosis that in a relationship between two organisms in which on (parasite) benefits while the other(host) is harmed

a symbiotic relationship in which one organism benefits and the other is neither harmed nor helped

All the living things in an ecosystem

Biomes Terrestrial biomes that show great variations in temperature, dissolved nutrients, gases, and sunlight penetration

coastal zones, are the regions that extend past the intertidal zone until you reach the edge of the continental shelf

organisms that colonize a disturbed ecosystem