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Science Review!!!

Across
A change or process or change by which an organism or species becomes better suited to its environment
The thing in the experiment you change
Affecting the form of a chemical substance, but not its chemical composition
The thing in the experiment that you measure
Something that can help you for a period of time
Total mass divided by total volume
Down
Something you have to adapt to permanently
The amount of space that a substance or object occupies
Example: Rusting of iron
A measure of the amount of matter IN an object
The variety of life in the world or in a particular habitat or ecosystem
Not changing in the experiment stays the same