1. Identify the three types of symbiotic relationships.

2. Identify 3 K selected characteristics.

3. In a desert ecosystem, a scientists caught, tagged, and released 50 lizards. One month later, 100 lizards were caught. Of the 100, only 40 had tags. How many lizards are in this ecosystem? Number in First Catch= Number in Second Catch With Tags Total Population Number in Second Catch

4. If the are 100 monkeys in a land area that measures 5 miles by 5 miles, what is the population density? Population Density (PD) = Number of individuals Land Space

5. Label the circle below with lines that represent 0, 30, 60 and 90 degrees. Draw arrows to represent how air bends in the circle below

6. Which coasts have the warmest waters? East coasts or west coasts?

7. Identify the type of symbiosis. Hookworms attached to the intestinal walls of humans get their nutrients from the host’s blood and tissue juices. Infected humans experience digestive disorders and anemia.

8. How does elevation effect temperature?

9. What is the %ANI and DT of the following population? Birth Rate = 15/1000Death Rate = 5/1000 Percent Annual Natural Increase (%ANI) =­­­­­­­­­­­­­ Birth Rate - Death Ratex 100 1000 Doubling Time (DT) = 70Measured in Years %ANI

10. Identify one biotic factor of a desert ecosystem. 10

11. Identify the type of symbiosis. Orchid vines grow up the trunks of trees. The areas at the tops of tree have more light than the areas underneath the trees. The trees are not affected by the orchids.

12. Identify the lines of latitude where air rises.

13. How does latitude effect temperature?

14. Draw a food web using 7 living things of your choice.

15. Explain how prey can control the population of its predator. 15

16. Draw a picture that represents the water cycle. Include in your drawing, precipitation, evaporation, condensation and infiltration.

17. Identify the type of symbiosis. A type of bacteria that lives on the roots of bean and pea plants converts nitrogen gas in the air into nitrogen compounds that the plants need for growth.

18. Identify three different biomes

19. What is the difference between a primary consumer and a secondary consumer?

20. Air rises at 0 and 60 degrees north and south latitude. How does this create precipitation? 20

21. Identify an abiotic factor of a tropical rain forest ecosystem.

22. Draw a picture of a mountain. In your picture us an arrow to indicate wind direction. Label each side of the mountain as windward or leeward.

23. What is the difference between weather and climate?

24. Identify three r selected characteristics.

25. Draw a food chain using four living things of your choice