<span>Silicon dioxide
forms the cell walls of diatoms. These diatoms are a group of algae.
Phytoplanktons are the most common types of diatoms that are unicellular. These
organisms can form colonies in the shapes of filaments or ribbons, fans,
zigzags, and stars that are perfect for monitoring environmental conditions,
particularly water quality in the past and present. </span>
Primary succession is a process of forming ecosystems in an area that has never been inhabited before. Since living organisms are necessary for forming the soil, which is a foundation of every land ecosystem, at the point before the soil formation or pedogenesis has occurred the ecosystem provides very few habitats.
In metaphase the chromosomes line up in the middle
Bacteria and fungi play an important role in ecosystems because they are decomposers. Decomposers are animals, bacteria, or other plants, (etc..) that consume dead organisms and return fertile soil as a result. The dead organisms they recycle also help them contribute more natural resources like carbon and nitrogen. These resources are released back into the soil, air, and water. Hope this helps! :D