I believe it goes in the following order top down
1 5 3 4 2.
The correct answer will be the second one Growth of a tumor
An area where soil has eroded experience loss of nutrients. The topmost layer of soil is called the topsoil and is the most fertile. Soil erosion results in the loss of soil fertility and makes the land barren
The main cause of soil erosion is the removal of vegetation, which exposes the topsoil to water and wind. Wind and water are the main agents of soil erosion.
Water erosion can be sheet erosion, rill erosion, gully erosion or riparian erosion.
Option D is correct.
A synapse is the opening between neurons that neurotransmitters pass through.
I think its free nitrogen
