Answer: Nonliving
Explanation:
It cannot be classified as dead or living as it isn't and never was alive, and it is important to survival and therefore isn't unimportant
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Answer:
If the frequency of a wave increases while its speed remains constant, the wavelength decreases i.e. the distance between successive crests decreases.
Explanation:
The different standard times are known as time zones. Time zones are useful because they can allow people to be active during the day and sleep during the night. If people spent hours with sunlight sleeping and worked in the dark, they would likely suffer health problems.
Big countries such as Australia and the United States have many time zones so that people can work and sleep in the time that is adjusted to the hours with sunlight in their specific location.
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<span>The correct answer is D - Saturn. Astronomers have known about Saturn's rings since Galileo first spotted them through his telescope in 1610. We've learnt a lot more about them since then, though, for example, we now understand that they are build from billions of different ring particles.</span>
