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3 marksEcosystem Dynamics and Community Stability

CAPE Environmental Science Unit 1 · 2019 · Paper 2 · Question 2(a)(ii)

Concepts related to population growth and ecosystem regulation.

Explain how environmental resistance regulates population growth in a natural ecosystem.

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Other parts of this question

  1. 2(a)(i)Define the term 'biotic potential'.[2 marks]
  2. 2(b)(i)Explain what is happening to the red deer population at the point X.[2 marks]
  3. 2(b)(ii)Explain what will happen if the population of red deer exceeds the carrying capacity.[3 marks]
  4. 2(c)State TWO human activities that may have a negative impact on a mangrove ecosystem.[2 marks]
  5. 2(d)(i)On the grid provided on page 13, draw a bar graph to represent the data in Table 2.[4 marks]
  6. 2(d)(ii)Given a choice between a line transect and a belt transect, which ONE is more suitable for conducting the study above? Explain your answer.[3 marks]
  7. 2(d)(iii)State ONE precaution that should be taken when collecting data using a line transect.[1 mark]

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