You should learn oceanology and also geography,biology.
Answer:
Prime Meridian
Explanation:
The most important line of longitude is the Greenwich or Prime Meridian (0°). This line runs through the Greenwich Observatory in London.
The horizon!!! This is basic. Brainliest answer over here!!
Answer: Tropic of Capricon
Explanation: the sun rays are directly overhead at the tropic of Capricorn on December 21 and it is called December Solstice
