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Sara

Across
A unicellular organism that lacks a nucleus and some other cell structures.
An organism that is able to capture energy from sunlight or chemicals and use it to produce its own food
An experiment in which only one variable is manipulated at a time.
The condition in which an organism's internal environment is kept stable in spite of changes in the external environment.
A reproductive process that involves two parents that combine their genetic material to produce a new organism which differs from both parents.
The mistaken idea that living things arise from nonliving sources.
The scientific study of how living things are classified
The process of grouping things based on their similarities.
A reproductive process that involves only one parent and produces offspring that are genetically identical to the parent.
The process of change that occurs during an organism's life to produce a more complex organism.
Any change or signal in the environment that can make an organism react in some way.
A living thing
Down
An action or change in behavior that occurs as a result of a stimulus.
The basic unit of structure and function in living things
In cells, a large oval organelle that contains the cell's genetic material in the form of DNA and controls many of the cell's activities.
The classification system in which each organism is given a unique, two-part scientific name indicating its genus and species.
An organism that cannot make its own food and gets food by consuming other living things.
Change over time; the process by which modern organisms have descended from ancient organisms.
Consisting of many cells
Made of a single cell
A classification grouping that consists of a number of similar, closely related species.
The combination of chemical reactions through which an organism builds up or breaks down materials
A grop of similar organisms that can mate with each other and produce offspring that can also mate and reproduce