A. Choose the letter of your best answer. (20 points)
1. Which of the following is the simplest level of ecological
organization?
A. A population
B. A community
C. An ecosystem
D. An individual or species
2. The organ systems of plants consist of the root and shoot
systems. Why is it important for these organ systems to work
together?
A.To grow and survive
B.To avoid pests and other animals
C. To avoid floods and strong winds
D. To survive droughts and earthquakes​