The image at the top-left corner represents geosphere because there are rocks. The geosphere ('geo' refers to 'ground') includes all the rocks and minerals that are found on Earth. Everything that is considered solid ground, such as rocks and mountains on the surface, is part of the geosphere.
Furthermore, the image at the top-right corner represents hydrosphere because it shows water. The hydrosphere contains all the water found on Earth. In that way, it refers to all the rivers, streams, lakes, oceans as well as groundwater and glaciers.
The bottom-left image represents atmosphere since it shows the sky. The atmosphere contains all the air in Earth. It is made up of many layers and one of its functions is protecting the organisms from the sun's ultraviolet radiation.
The image at the bottom-right corner represents biosphere since it portrays trees. This sphere includes all the living things, that is, microorganisms, plants, and animals on Earth. Within the biosphere, some living things form ecological communities, which are known as 'biomes'. Some of them are grasslands, rainforests, and deserts.
