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What is 1 + 3?
When farms were made into a larger scale and not just small backyard farms to support a family.
The amount of what will happen in an experiment.
When the people transferred to manufacturing work.
all living organisms in a certain area, habitat
the act of conducting a controlled test or investigation
To make a smart guess on what might happen in what your doing.
To keep something the same within the experiment, the unchanged.
A theory about the natural world.
the property of being sustainable
a statistical relation between two or more variables such that systematic changes in the value of one variable are accompanied by systematic changes in the other
The variable that is changed or manipulated.
Tragedy of the Commons
When there is something that is free and open to all people.