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Biology Vocab

Across
the variable that may change in response to manipulations of the independent variable
process by which cells from two different parents unite to produce the first cell of a new organism
process by which a single parent reproduces by itself
a variable whose values are independent of changes in the values of other variables
a hypothetical organic phenomenon by which living organisms are created from nonliving matter
a change in an organism's surroundings that causes the organism to react
the basic structural and functional unit of all organisms
the science that studies living organisms
an explanation that is based on prior scientific research or observations and that can be tested
A living thing
set of chemical reactions through which an organism builds up or breaks down materials
a collection of tissues that carry out a specialized function of the body
process by which organisms maintain a relatively stable internal environment
Down
a test of the effect of a single variable by changing it while keeping all other variables the same
group of similar cells that perform a particular function
group of organs that work together to perform a specific function
well-tested explanation that unifies a broad range of observations
the process of gathering information about events or processes in a careful, orderly way
change over time
information gathered from observations