Answer:
C. An imaginary line that splits Earth in half between the North Pole and the South Pole
Explanation:
The 0-degree latitude line is the equator. It is the only line of latitude that is a great circle. The equator divides the earth equally between the North Pole and the South pole.
Places above the equator are the northern hemisphere whereas, those below fall into the southern hemisphere.
- The equator is the only known great circle.
- All other lines of latitudes are small circles.
- Most places along the equator usually have the sun overhead and receive direct insolation.
Other choices are wrong;
- The northernmost point on earth is the north pole
- An imaginary line that runs through Greenwich in London is the Prime meridian
- The southernmost point of Earth is the south pole.
1. Around 1900 the first dams were built on the Muskegon river, and this immediately cause a problem in the ecosystem by being a blockade for the movement of the water species, as well as causing higher mortality by killing them in the turbines.
2. By 1950 more dams were built, and the there were even more blockades on the way of the water species, so their movement was restricted even more, the mortality rates skyrocketed because of the disposing of the oxygen, temperature change, river flows changing etc.
3. Even though the scientists miss information from the period before the dams were built, since the information have started to be gathered it has been very obvious that the main factor for ruining the ecosystems on the Muskegon river are the dams by causing all sorts of changes in the water.
Disconformities, nonconformities and angular unconformities
It is already simplified unless the variables have a value
