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Unit 1: Introduction to Ecology Part 2

Created by: E. Belcher
Horizontales
Species with narrow niches (ex. koala can ONLY eat one type of food).
These organisms do not regulate their internal conditions. They change as their external environment changes. (ex. lizard)
A tolerance _____ is a graph of an organism's tolerance to a range of an environmental variables.
Energy flows through an ecosystem in one ________, from sun to autotrophs and then to various heterotrophs.
The organisms living in a particular environment are able to _______ fluctuations in the environmental conditions of their area.
A food _____ is the network of complex interactions formed by the feeding relationships (or food chains)among the various organisms in an ecosystem.
An autotroph that carries out chemosynthesis (ex. some bacteria living near hydrothermal vents, hot springs, or in tidal marshes)
All ______ chains begin with an autotroph, like grass, leaves, or marine algae)
Each step in a food chain is called a ________ level.
An organism that is capable of using energy from the environment to MAKE THEIR OWN FOOD, called "producers" (ex. green plants, algae)
Plant eater
Consumers of herbivores called ________belong to the third trophic level.
Eats both plants and animals, prefix means "all"
The energy stored by producers can be passed through an ecosystem along a food _______.
Verticales
Meat eater
These organisms use energy to control some of their internal body conditions. (ex. human)
The _______ trophic level is occupied by herbivores that feed on the producers. Known as primary consumers.
An organism's "address," where an organism lives, involves both biotic and abiotic factors.
An autotroph that carries out photosynthesis. (ex. green plants and algae)
The main source of energy for life on Earth.
The process an organism goes through when adjusting to a change in an abiotic factor. (Ex. adjusting to lower oxygen levels at higher elevations)
Dead eater, feeds on animal remains, waste, or other dead matter (ex. vultures, snails, crabs)
Organisms that are NOT capable of producing their own food, known as "consumers," they MUST consume other living organisms for their food supply and energy (ex. animals, fungi)
The nonliving factors that influence or affect the ecosystem.
Species with broad niches, can tolerate a range of conditions and use a variety of resources (ex. the opossum).
Cause decay by breaking down organic compounds (bacteria, fungi)
Abiotic and biotic factors are ______ upon one another.
A genetic change in a species or population that occurs over many generations.
The first trophic level in a food chain is always a ________.
The living components of the environment.
An organism's "occupation," a way of life or the role the species plays in its environment.