Examlex
Humans have drilled less than one-thousandth of the distance from the surface to the center of the Earth.
Kinetic Energy
The energy that an object possesses due to its motion, dependent on mass and velocity.
Efficient
Performing or functioning in the best possible manner with the least waste of time and effort.
Catalyst
Substance that increases the rate at which a chemical reaction proceeds without being changed permanently.
Chemical Reaction
A process that leads to the transformation of one set of chemical substances to another, characterized by the breaking and formation of bonds.
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