Cycle 5 Exam Review

2. the theory that Earth's crust is divided into large pieces called tectonic plates that float and slowly move around on the mantle
4. a line on a map that connects points with the same elevation
6. a group of organisms belonging to the same species that live in the same area
7. the mechanical or chemical processes by which gravity, water, wind, and ice break rocks into smaller pieces
11. the process that occurs when magma rises to Earth's surface and creates new oceanic crust
17. the theory that the continents were once connected but have slowly drifted apart over time
18. the process by which gravity, water, wind, and ice remove and transport sediment from one place to another
20. the process by which gravity, water, wind, and ice deposit weathered and relocated sediment

1. the process that occurs when two tectonic plates meet and the denser plate moves beneath the other plate
3. all of the populations of different species that live in the same area
5. a system comprising all the biotic and abiotic factors in an area and all the interactions among them
8. a nonliving thing that affects the ecosystem in which it exists
9. the difference in elevation between two adjacent contour lines of a map
10. an individual form of life
12. a human-made, underwater structure that promotes the growth of reef-dwelling organisms
13. when multiple individuals or populations in an ecosystem rely on the same limited resource
14. a deep, narrow depression in the seafloor where a subducted plate is moving into the asthenosphere
15. a group of organisms that are genetically related and can breed to produce offspring
16. a living thing that affects the ecosystem in which it exists
19. removing more fish from an ecosystem than can be replaced by the reproductive rates of the remaining populations