This zone is called as the zone of aeration. It is present between the earth's surface and the water table, and its main constituents are the soil and rocks. The pores which are present in this zone are partly filled with water, and may mix up with air, causing aeration.
<span>B. Rocks go through many stages during their formation</span><span>
Sedimentary rocks together with the igneous rocks and the metamorphic rocks are the three main types of rocks that existed on earth. It is formed or made accordingly into four major ways. First, it is formed by depositing weathered remains of "clastic sedimentary rocks" or other rocks. Second, is through accumulation and the consolidation of sediments, thirdly is by depositing the results of biogenic activity and lastly it is formed through precipitation from solution. Limestone, shale, chalk clay and others are best examples of sedimentary rocks. </span>
<span>Radiolarians have a cell wall made of
.....
According to </span>
https://microbewiki.kenyon.edu/index.php/Radiolaria <span>
"</span>
Radiolaria are unicellular organisms. They have mineral skeletons (tests) that are composed
of silica. The tests are formed through the absorption of silicon
compounds. This skeleton is covered with cytoplasm, which is withdrawn
if the organism is disturbed."
There cell wall is made of according to another website
...
<span> "Radiolaria....have cell walls made up of thick cellulose walls"
Hope this helps:)
@SamSamySamantha
</span>
Hematite is a mineral that is made of Iron and Ore and has a Crystal Shape.
Answer:
Intrusive rocks are coarse-grained in texture and crystallise slowly from magma deep in the earth's crust. Extrusive rocks are fine-grained in texture and crystallise quickly from lava on or near the earth's surface. The mineralogy determines the type of rock.
