SECTION B QUESTION 2 2.1. Read the following passage and then answer the questions that follow. In 19900 the estimated impala population in a certain environment was approximately 8 000. Large populations of lions and cheetahs were also present Between 1990 and 2000 about half the populations of lions and cheetahs were eliminated. By 2002 the number of impala had increased to about 80 000 and nearly all the grass shrubs and young trees had been eaten. During the winter, 80% of the impala population died out and this continued to decline until only 4 000 impala were left. The vegetation however, continued to degenerate for a long time. In the beginning, it was estimated that the carrying capacity of the area was 20 000 impalas 2.1.1 Differentiate between interspecific competition and interspecific competition (2) 2.1.2 By referring to the passage, give the names of the organisms involved in (b) Intraspecific competition Interspecific competition 2.1.3 Why did the impala population continue to decline after 80% had died during the winter? (1) 2.1.4 is predation a density-dependent or density-independent factor? Give a reason for your answer. (2) (9)​