The correct option is A.
Plants can participate in both mechanical and chemical weathering of rocks. Mechanical weathering occurs when rocks are broken into smaller particles as the result of the roots of plants which grows and push them apart. Chemical weathering occur when the plant roots release chemicals, such as acids, which help in breaking down the rock particles.
Latitude (going up and down) and longitude, going sideways.
They occur at divergent plate boundaries.
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
