Answer:
Pre-dusk, early to medium twilight phases allow outdoor activities without using artificial lighting
Explanation:
Civil twilight is a term, and we describe it as "the time after sunset and before sunrise ends or begins when the sun seems to be about 6 degrees underneath the horizon during which the light for normal outdoor occupations is adequate on clear days.
Nautical twilight is the second stage of twilight. By this time, both horizon and the brighter stars are easily visible, making navigation around sea possible.
Astronomical twilight occurs whenever the Sun is under the horizon between 12° and 18°
Pre-dusk, early to medium twilight phases allow outdoor activities without using artificial lighting
Answer:
the answer to this question is b
Explanation:
he has done this because British people recognise the name David more as it is common in the UK.
The matches for different forms of energy sources are as below,
- Nuclear energy – The largest non-fossil fuel source in the world
- Oil – May run out in the next 100 years
- Solar Power – Uses energy directly from the sun
- Hydroelectricity – Uses running water
<h3>What are the different energy sources?</h3>
The forms of energy that can be used to perform certain tasks, where they serve as a fuel and electricity are known as energy sources. Oil and Nuclear energy are non-renewable sources of energy.
Whereas, the solar energy and hydroelectricity are renewable and clean sources of energy. They do not cause as much pollution as the non-renewable sources.
Hence, 1-A; 2-B; 3-D and 4-C are the matches for the energy sources.
Learn more about energy sources here:
brainly.com/question/13380126
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