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:
(e) arsenate
Explanation:
Arsenate -
arsenate are the chemical compound , that contains the arsenate ion , of formula , AsO₄³⁻ . The valency of the the arsenic atom in the ion is 5 , and has a pentavalent structure .
From the given compound in the question , the compound have an arsenate ion , hence it belongs to the Arsenate family .
Near Boston, Massachusetts, in Beacon Hill, Massachusetts
Answer:
* What is meant by coastal management?
coastal management is a defence technique to prevent or lower the occurrence of flooding and erosion, and ways to stop erosion from claiming lands. Protection against rising sea levels in the 21st century is crucial, as sea level rise accelerates due to climate change.
* Why is coastal management important?
The reason for coastal management is obvious, which is to protect homes and businesses from being damaged and even destroyed by coastal erosion or flooding. Failure to do so can have severe economic and social effects, especially along coastlines which are used for tourism and industry.
Mestizo aka a mutt , the word comes from spain
