The geosphere hosts elements like oxygen, iron, hydrogen, silicon, calcium, magnesium, aluminium, etc.
<u>Explanation:</u>
Elements that are majorly found in the geosphere (the "solid part of the Earth" consisting of the crust, mantle and the core) are oxygen, iron, silicon and magnesium, hydrogen, etc.
Thousands of other substances found on Earth are made up of these basic elements.
These elements constitute about 98% mass of the entire Earth. Oxygen is the most abundant element found in the geosphere.