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Biology 1.2 and 1.3

TermDefinition
Domain In a modern taxonomic system, the broadest category; the category that contains kingdoms.
Kingdom In a traditional taxonomic system, the highest taxation category , which contains a group of similar phyla.
Ecology The study of the interactions between organisms and the other living and nonliving components of their environment.
Ecosystem A community of organisms and their abiotic environment.
Evolution A heritable change in the characteristics within a population from one generation to the next; the development of new types of organisms from preexisting types of organisms over time.
Natural Selection The process by which individuals that are better adapted to their environment survive and reproduce successfully than less well adapted individuals do; a theory to explain the mechanism of evolution.
Adaptation The process of becoming adapted to an environment; and anatomical, physical, physiology, or behavioral trait that improves an organism's ability to survive and reproduce.
Scientific Method The series of steps followed to solve problems, including collecting data, formulating hypothesis, and stating conclusions.
Observation The process of obtaining information by using the senses; the information obtained by using the senses.
Hypothesis In science, an idea or explanation that is based on observations and that can be tested.
Prediction A statement that is made in advance that express the results that will be obtained from testing a hypothesis if the hypothesis is supported; the expected outcome if a hypothesis is accurate.
Experiment A procedure that is carried out under controlled conditions to discover, demonstrate, or test a fact, theory, or general truth.
Control Group In an experiment, a group that serves as a standard of comparison with another group which the control group is identical.
Experimental Group In an experiment, a group that is identical to a control group except for one factor and that is compared with the control group.
Independent Variable In an experiment, the factor that is deliberately manipulated, also called the MANIPULATED VARIABLE.
Dependent Variable In an experiment, the factor that changes as a result of manipulation of one or more other factors; also called a RESPONDING VARIABLE.
Theory An expansion for some phenomenon that is based on observation, experimentation, and reasoning; that is supported by large quantity of evidence; and that does not conflict with any existing experimental results or observations.
Peer Review The process in which experts in a given field examine the results and conclusions of a scientist's study before that study is accepted for publication.
Created by: kochm20