Answer:
D.All of the above
Step-by-step explanation:
Proof: Since invasive species did not co-evolve with the other species in the ecosystem where they were introduced _______.
a.they can unbalance the ecosystem
b.they are considered a serious environmental problem
c.they lack natural predators to help control their population
d.all of the above
Please select the best answer from the choices provided
A
B
C
✅D