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
It’s true By the end of the 19th century, the Western powers and Japan had forced China’s ruling Qing dynasty to accept wide foreign control over the country’s economic affairs. In the Opium Wars (1839-42, 1856-60), popular rebellions and the Sino-Japanese War (1894-95), China had fought to resist the foreigners, but it lacked a modernized military and suffered millions of casualties.
<span>Isohalines are lines (or contours) that join points of equal salinity in an aquatic system.</span>
Answer:
A cannot be accurately measured
