True or False: People traveling near the speed of light relative to Earth would measure their lifespans and find them, on the average, longer than the average human lifespan as measured on Earth.
1.False
2.True
Question 2
Suppose you're an astronaut being paid according to the time you spend traveling in space. You take a long voyage traveling at a speed near that of light. Upon your return to Earth, you're asked how you'd like to be paid: according to the time elapsed on a clock on Earth or according to your ship's clock. To maximize your paycheck, which should you choose?
1.the Earth clock
2.the ship's clock
3.either clock because it doesn't make a difference
How phytochrome acts as a molecular light switch.
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The human X chromosome (left) and the Y chromosome (right). This false-color scanning electron micro