Explain why the fact that invasive species did not co-evolve with the native species unbalances an ecosystem.

Explanation:

An invasive species is the one which is introduced into a new habitat either accidentally or intentionally by humans are capable of negatively affecting the  ecosystem of the new habitat. They compete with the native species for food, shelter and other resources. This leads to the reduction in number, migration and extinction of the native species. This unbalances an ecosystem. Therefore, invasive species does not co-evolve with the native species.

the fossil record provides evidence of a common ancestor to many species.

the nitrogen cycle provides nitrogen to the ecosystem from the atmosphere, ground and oceans. nitrogen is an important component of complex molecules such as amino acids and nucleotides, which lead to the creation of proteins and dna, the building blocks of all life. plants absorb nitrogen in the form of ammonium, nitrate ion and, on rare occasions, as amino acids. animals receive nitrogen necessary for biological processes from feeding on living or dead organic matter.