Hi! This is the Unit Quiz for the Alien Invaders lessons. It measures the material you learned about invasive species. Please read each question carefully. Choose the best answer from the four choices. After you choose an answer, click the circle next to that answer. Mark only one answer for each question, if you wish to change an answer, click on the circle next to your new answer. You must answer all the questions on the test. When you complete the test, click the Finish button. Once you click Finish, you will NOT be able to change any answers. Good Luck!