2. 1. Classify the following as biotic or abiotic. Sunflower___Biotic______________ Water___Abiotic________________________ E.coli bacteria__Biotic ___________________ Bird feather_Abiotic__________________ Humans______ Biotic ___________________ Pine tree_____Biotic____________

3. 2.

4. 3. Autotroph - sun/photosynthesis - plants, flowers Omnivore – plants and animals – raccoon, birds Carnivore – animals only – wolf, fox, hawk Herbivore – plants only – deer, some insects Decomposer – dead or decaying – fungi, bacteria

5. 4. AutotrophHeterotrophHeterotrophHetertroph Decomposer/Herbivore Omnivore Carnivore 10,000 cal1,000 cal100 cal 10 cal

6. 5. Commensalism- one organism benefits, the other is not affected Mutualism – both organisms benefit Parasitism – one organism benefits, the other is harmed

7. 6. Algae growing on aquatic turtles –C–C A tick living on a deer –P–P Honeybee pollinating a flower –M–M Mistletoe growing on a pine tree –P–P

8. 7. Biotic or abiotic factors that restrict reproduction. They keep a population in check.

9. 8. The _____________ of a species describes the trophic function it fills in its environment. Niche

10. 9. ________________ species are species that are not native to the area they live in. Invasive or exotic

11. 10. The carbon cycle is the movement of carbon from the atmosphere to the earth and back (continuously). The higher your carbon footprint, the greater impact you have on the carbon cycle. Photosynthesis- carbon in Decomposition- carbon out Respiration- carbon out

12. 11. More snakes and hawks, less grass

13. 12. Trees, grass

14. 13. Decomposers- break down dead or decaying matter

15. 14. It’s a heterotroph- an herbivore specifically. It competes with crickets, is food for snakes and hawks

16. 15.

17. 16. #2 Not exponential, the population seems like it is at carrying capacity because of limiting factors

18. 17. #1 It is exponential with ideal conditions

19. 18. #2 Slow, larger organisms, takes a long time to mature and reproduce.

20. 19. #1 Quick growth and reproduction

21. 20. Eventually, limiting factors set in and deaths > births.

22. 21. Biodiversity is the variety of species in a given area. Biodiversity is low (only 2 species) in this example.