Answer:
I am explain you in image
The propagation velocity of the waves depends on density and elasticity of the medium. Velocity tends to increase with depth and ranges from approximately 2 to 8 km/s in the Earth's crust up to 13 km/s in the deep mantle.
The ecosystem is indeed huge, the one who are creating in the ecosystem are animals and plants both are the one who creates the ecosystem.
The interactions that occur between organisms in an ecosystem: Predation, parasitism and herbivory.
Predation - Predating another animal for a prey
E.g : Lions And Antelopes
Paratism - Some small things that lives with the host, it can harm the host or harm the parasite.
E.g: dogs and lice or bacteria and humans
Herbivory - animals that eat plants
e.g: Sheep And the grass
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When the sea floor spreads or collides it creates breakages which would be ocean ridges and deep sea trenches
<span>During a decomposition reaction, a compund partitions into it's components. This is a type of a chemical reaction where a larger/more complex compund is broken down into simpler elements or compounds which were initially combined in a chemical reaction.This type of reaction often requires an energy source such as heat or light to break down the compound.</span>
