Explanation:
Here is the explanation about these layers.
Limestone: This rock is formed from sediments that gather on the river floor over time & Limestone is mostly found in rivers, caves, etc. This resource is made from natural activity, for example, sediments travelling through the river & the water causing it to settle.
Banded-iron formations: This rock, or resource, is thought to be made in the seawater millions of years ago and is the result of oxygen production from a particular type of photosynthetic cyanobacteria. The oxygen, combined with dissolved iron makes this resource.
A metamorphic rock with fine grains: I cannot explain how this rock is made from, please find someone who can.
Red Beds: "Red beds may form during diagenesis. The key to this mechanism is the intrastriatal alteration of ferromagnesian silicates by oxygenated groundwaters during burial. " - Wikipedia
Chert Layers: Chert can form when microcrystals of silicon dioxide grow within soft sediments that will become limestone or chalk.
I hope this has helped you to learn about these rocks.
The architecture of a kelp forest depends on its physical structure, which influences the species that occupy the forests. Kelp forests usually include three types of kelp and two types of algae:
1. Prostrate kelps lie near and along the sea floor and form the lowest level of kelps
2. Stipitate kelps are above the prostrate kelps upto a few meters above the seafloor.
3. The Canopy kelps include the largest species of kelp and often extends to the top of the ocean surface.
4. Coralline algae directly and often extensively cover geologic substrate i.e the sea floor.
5. The benthic assemblage is composed of other algal species.
I think it’s to control the total fertility rate
