How can an invasive species impact a local ecosystem?

a physical change is being made.

this age may represent the age of the earth's accretion, of core formation, or of the material from which the earth formed. this dating is based on evidence from radiometric age-dating of meteorite material and is consistent with the radiometric ages of the oldest-known terrestrial and lunar samples.

c: warm water flows from the western tropical pacific toward south america. that should be the right answer! hope it .