Identify which of the following statements is/are true of invasive species.
P. They can cause the extinction of native plants and animals. 
Q. They can cause a reduction in biodiversity.
R. They are less adapted to the environment.
S. They are considered aliens

• A. P and R
• B. Q and R
• C. P, Q, and S
• D. P, Q, R, and S

Answer: (C)