Semester final Flashcards
Biotic factors ¥
All of the living parts of a ecosystem.
Energy pyramid ¥
A model that shows the available armpit of energy in each trophic layer in an ecosystem.
Food web¥
A model that shows many different feeding relationships among living things.
Decomposer ¥
Organisms which carry out the process of decomposition by breaking down dead or decaying organisms.
Food chain¥
A model that shows one set of feeding relationships among living things.
Consumer ¥
An organism that eats other living things to get energy;
Biome¥
A major ecological challenge community such as grassland, tropical rainforest, or desert.
Nitrogen cycle¥
A process in which nitrogen in the atmosphere enters the soil and becomes part of living organisms then eventually returns to the atmosphere.
Water cycle ¥
The continual movement of water between the land,ocean,and the air through predictable physical processes.
Producer¥
A organism that makes its own food and does not eat other producers
Carbon cycle¥
A natural cycle in which carbon compounds, mainly carbon dioxide , are incorporated into living tissue through photosynthesis and returned to the atmosphere by respiration , decay of dead organisms , and the burning of fossil fuels.
Predator¥
An animal that hunts and eats other animals
Prey¥
An animal that is hunted and eaten by another animal
Ecology¥
The branch of biology that deals with the relations of organisms to one another and to their physical surroundings
Abiotic factors¥
All of the non living parts if a ecosystem
Succession¥
The progressive replacement of one community by another until a climax community is established
Levels of organization
Cells, tissue, organs, organ systems, organisms
Metric system
The decimal measuring system based on the meter, liter , and gram as units if 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 if another
Constant variable
A unchanging standard of comparison
Hypothesis
A supposition or proposed explanation made in the basis of limited evidence as a starting point for further investigation
