Examlex
A(n) _____ is any condition that can change and that might affect the outcome of the experiment.
Labor
The effort by humans to produce goods or provide services in the economy, often measured in terms of hours worked or output produced.
Metal Alloy
A mixture of two or more elements, where at least one is a metal, created to enhance properties such as strength, durability, or resistance to corrosion.
Zinc
A chemical element with the symbol Zn and atomic number 30, often used for galvanizing iron and steel to protect against rust.
Copper
A chemical element with symbol Cu and atomic number 29, known for its high thermal and electrical conductivity.
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