Answer:
Polar satellite
Explanation:
Polar satellites circles the earth Ina north-south direction and obtain images of the entire earth twice a day by drifting about 15° westward over the earth's surface during each orbit.
Polar satellites refers to artificial satellites which revolve around the Earth in a north−to-south orbit passing over the poles as the Earth rotates about its north - south axis.
It is used for mapping and surveying.
The Sahel is located in Africa. It is the region in Africa that
transitions from the Sahara to the Sudanian Savanna. It stretches across
in the region from the West of Africa to the East and includes parts of
Senegal, Mauritania, Mali, Burkina Faso, Algeria, Niger, Nigeria, Chad,
Sudan, South Sudan, Eritrea, CAR, Cameroon, and Ethiopia
It is the Baltic Sea
The Baltic Sea is the Sea that borders <span>Russia, Poland, and Latvia, but also some other countries: Finland, Sweden, Denmark, Lithuania, and Estonia. It is joined with the North Sea around Denmark, which is further joined with the Atlantic Ocean.</span>
I would say E. satellite information
The index fossils are fossils that are found in the rock strata of certain geologic period, but they are also fossils that are very common and can be found in numerous places around the globe.
Because they can be found all over the globe, and they are indicative of certain geologic period, the geologists have started to use them as a simple way of determining the age of the rock strata. While this method can not provide the geologists with an accurate year for the formation of the rocks, it is still able to determine the relative age of the rocks. By determining the relative age with such ease by using the index fossils, the geologists are able to immediately make conclusions about the rock strata, have basic information about it, and largely be aware of the processes that formed them and influenced them.
