How does sympatric speciation differ from allopatric speciation?

Both symaptric and allopatric speciation are the mechanisms of speciation which helps in the evolution of population to become distinct and new species but these mechanism differ from each other in their way that is how they are involved in the process of speciation.

Allopatric speciation occurs when a population is separated by a physical barrier like mountain range which geographically isolates the population and makes it impossible to breed with one another.

Sympatric speciation occurs when population faces no physical barriers and can mate but when some individuals within population become dependent on certain aspects of an environment such as food or shelter and a new species within a population evolves.

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explanation:

step 1: nitrogen fixation- conversion of atmospheric no₂ into forms useful to plants by lightning, bacteria, and cyanobacteria.

step 2: nitrification-process of converting ammonia to nitrite or nitrate.

step 3: assimilation-plant roots absorb new form of nitrogen.

step 4: ammonification-conversion of organic nitrogen to ammonia by bacteria involved in decomposition.

step 5: denitrification-bacteria turns the decomposed matter back into n₂o, which is released into atmosphere; repeat cycle.