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Gordon Freeman rides the tram to his underground lab at AM and passes Barney Calhoun, seen bashing on a locked door as Gordon continues his trip.
The public announcement system announces the most recent news, making ironic comments about healthcare measures on radiation and urinalysis tests, as large pools of radioactive waste pass beneath him.
Perhaps the most widely used evidence for the Theory of Evolution through Natural Selection is the fossil record.
The fossil record may be incomplete and may never fully completed, but there are still many clues to evolution and how it happens within the fossil record.
At a Loader crossing, the tram is stopped, and on the left, the G-Man is as well in a tram.
Eventually, Freeman's tram reaches its destination, and after stepping out onto the catwalk, Gordon's day begins.
Learn about different types of radiometric dating, such as carbon dating.
The Training Facility at Black Mesa houses the Hazard Course to help users of the HEV Suit hone their skills at jumping, crouching, and combinations of both movements in an environment as well as to give them basic instructions on how to operate guns and interact with the rest of the equipment.
This is what your readout said, so your fossil has undergone two half-lives.
Now that you know how many half-lives have passed for your fossil, you need to multiply your number of half-lives by how many years are in one half-life. Your fossil is of an organism (maybe human) that died 11,460 years ago.
"Standard procedure for a non-standard specimen," they assure him from above.
"Go ahead, Gordon." Gordon proceeds to push the cart into the beam.