Deep water currents are made of 90% of the ocean.
surface waves are made up of 10% of the ocean water
and primary forces start the water moving
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 moon is 4.53 billion years
2. A.
3. C.
4. B.
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Explanation:
Geologic maps are most recognized by their colors/symbols which represent different rock units/rock ages. If you observe a geological map, you would notice different areas have different colors. These colors usually denote similar characteristics in rocks surrounding an area (age, type). Symbols are denoted by a capital letter followed by lower case letters. The capital letter represents the age of the unit.
