Which change would create a new ecosystem?

Question

(1 point)
Responses

a yearly migration
a yearly migration

an introduced species
an introduced species

a dam flooding a valley
a dam flooding a valley

a lake freezing over

Answer 1

The change that would create a new ecosystem is an introduced species. This is because the introduction of a new species can alter the existing balance of an ecosystem, leading to changes in species interactions, resource availability, and overall ecosystem structure. The other options may affect an ecosystem, but they are less likely to create an entirely new ecosystem on their own.