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ings need carbon. How does carbon enter the living portion of an ecosystem? A) A

ID: 274416 • Letter: I

Question

ings need carbon. How does carbon enter the living portion of an ecosystem? A) Atmospheric CO2 taken in by photosynthesis B) Atmospheric CO2 taken in by soil bacteria C) Elemental carbon taken in by plant roots D) Elemental carbon taken in by plant leaves 9) What is the name of the model of maximum rate of population growth? 10) A sudden natural catastrophe resulting in massive die-offs would be categorized as a limiting factor. density- A) B) dependent C) reliant D) autonomous fhs 19%x and has ben y dein ever sice. How 11) H is this expected to affect our population size over the next several decades? A) The human population size will begin to decline. B) The human population size will continue to increase, but not as fast as before. C) The human population size will level off D) The human population size will continue to increase at the same rate it has for the past 100 There are little birds that spend a great deal of time on the back of a rhinoceros and cat the blood- sucking ticks out of the rhino's ears. Answer the following question(s) regarding these creatures' relationships. 12) The bird-rhino relationship is an example of A) parasitism B) mutualism C) predator-prey D) commensalism 13) The bird-tick relationship is an example of A) parasitism B) mutualism C) predator-prey D) commensalism 14) The tick-rhino relationship is an example of- A) parasitism B) mutualism C) predator-prey D) commensalism

Explanation / Answer

8. A )

we eat food which is eventually made by plants

9. Logistic model

10. independent

11. b

12. mutualism

13. predator-prey

14. parasitism

15. invasive

16. D

17. Deforestation which is leading to habitat loss of animals

18. Changing climatic conditions

19. b

20. B

21. their salinity

22.