The answer is The Arctic Ocean! The equator passes through the Pacific Ocean, the Atlantic Ocean, and the Indian Ocean.
The hydrosphere is the sphere where all the water of the Earth is included. The geosphere refers to the internal structure of the Earth, the atmosphere is the layer of gases that surrounds the Earth , and the lithosphere is formed by the crust and the upper mantle
The ecliptic is the plane of Earth's orbit around the Sun. Hope this helped!
The geological feature responsible for the volcanic activity in this part of the world is the convergent tectonic boundary between the North American tectonic plate and the Pacific tectonic plate.
The Aleutian Islands are part of the so called ''Ring of Fire''. This means that they are part of the most active volcanic chain in the world. This is due to the convergent boundaries between the Pacific tectonic plate from one side, and the North American, South American, Eurasian, and Australian tectonic plate from the other side. The Pacific plate is submerging bellow all of them, and this contributes to the release of lots of magma and pressure towards the surface of the Earth, thus creating volcanoes in close proximity to the tectonic boundaries.
One of the biggest environmental problems of sub-Saharan Africa is the deforestation. In order to produce food, or make some profit, the majority of the people tend to destroy the forests. This is usually done with the clear cutting or slash-and-burn methods. While this works on the short run, usually 3-4 years, after that short period the land can not be used as it has been severely degraded and eroded. In order to be able to continue producing food, the people continue to do the same, living behind large areas of barren and destroyed land. The deforestation also causes desertification, which makes the land unusable for generations to come or more, except if smart policies are not undertaken. The environment is totally destroyed as well, with numerous plant and animal species losing their habitats or being directly destroyed, putting them on the endangered list.