Organisms & Their Environment
nonliving parts of the environment
What are abiotic Factor?
the process by which water continuously moves from Earth's surface to the atmosphere and back
What is the water cycle?
Turns black/blue when starch is present
What is starch indicator?
The measurable effect, outcome, or response in which the research is interested. "doctor measures"
What is the dependent variable?
an organism, generally a bacterium or fungus, that consumes dead organisms and organic waste
What is a decomposer?
the specific role played by an organism or a population of organisms in the ecosystem
What is a niche?
a fuel, such as coal and gas, that comes from the remains of organisms that lived millions of years ago
What is fossil fuel?
the variety of life in the world or in a particular habitat or ecosystem
What is biodiversity?
A proposed statement for an observed phenomenon. This statement must be testable and cannot be written as a question.
What is a hypothesis?
all the living and nonliving things that interact in a specific area; a subdivision of the environment
What is an ecosystem?
an organism that survives by living and feeding on other organisms
What is a parasite?
Earth's resources, such as our food supply and solar energy, which given time, can be replaced
renewable resource
A technique that is used to separate the pigments of a mixture based on the tendency of each component to travel or be drawn across the surface of another material.
What is chromatography?
In an experiment, the group that is not exposed to the treatment; contrasts with the experimental group and serves as a comparison for evaluating the effect of the treatment.
What is the control group?
organism that cannot make its own food; a consumer
What is a heterotroph?
the process by which an existing community is replaced by another community
What is succession?
an exchange or agreement made to reach a compromise
What is a trade-off?
The part of the environment that determines which individuals are most adapted to the environment
What is selecting agent?
well-tested explanation that unifies a broad range of observation
What is a theory?
the destruction of an organism, or the removal of an organism from its habitat
What is direct harvesting?
the largest population of any single species that an area can support
What is carrying capacity?
the layer of ozone gas in the upper atmosphere that protects Earth from some of the sun's radiation
What is ozone shield?
Procedure used to separate and analyze DNA fragments by placing a mixture of DNA fragments at one end of a porous gel and applying an electrical voltage to the gel
What is gel electrophoresis?
Scientists use other scientists to validate their results
What is peer review?
any factor in the environment that limits the size of a population
What is a limiting factor?