Study guide Flashcards
Energy pyramid
A model that shows the available amount of energy in each trophic layer in an ecosystem
Food chain
A model that shows one set of feeding relationships among living things
Food wed
A model that shows many different feeding relationships among living things in a given area
Producer
An organism that makes its own food; an organism that does not consume other plants or animals
Consumer
An organism the eats other living things to get energy; an organism that dose not produce its own food (related word: consume.
Biome
A major ecological community such as grassland, tropical rainforests, or desert
Ecology
The branch of biology that deals with the relation of organism to one another and to their physical surroundings
Nitrogen cycle
A process in which nitrogen in the atmosphere enters the soil and becomes part of living organism then eventually returns to the atmosphere
Water cycle
The continual movement of water between land, ocean, and the air through predictable physical processes
Carbon cycle
A natural cycle in which carbon compound, mainly carbon dioxide, are incorporated into living tissues through photosynthesis are returned to the atmosphere by respiration, decay of dead organism, and the burning of fossil fuel
Biotic factors
All of the living parts of an ecosystem
Abiotic factor
All of the nonliving parts of an ecosystem
Prey
An animal that is hunted and killed by another for food
Predator
An animal that naturally preys on others.
Succession
The sequence of communities that develop in a area
Levels of organization
The biological levels of organization of living things arranged from the simplest to most complex are: organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere
Lad safety rules
Report all accidents, injuries, and breakage of glass or equipment to instructor immediately. Keep pathways clear by placing extra items on the shelves or under the work tables. Wear safety goggles to protect your eyes when heating substances, dissecting.
Metric system
The decimal measuring system based on the meter, liter, and gram as units of length, capacity, and weight or mass.
Dependent variable
A variable whose value depends on that of another.
Independent variable
A variable whose variation does not depend on that of another.
Constant variable
Also called control Statistics a person, group, event. That is used as a constant and unchanging standard of comparison in scientific experimentation.
Hypothesis
A supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation.
