(a)
Fig. 7.2 shows how many wild Sumatran tigers there were in the world from 1970 to 2020.
(a(i))[2]
Calculate the mean rate of decrease of the Sumatran tiger population from 1970 to 2020.
(a(ii))[3]
There are several different ways to help conserve Sumatran tigers. For instance, some zoos run captive breeding programmes. Outline ways in which Sumatran tigers may be conserved, other than captive breeding programmes.
(b)[4]
Outline the reasons for maintaining animal biodiversity.
(c)[4]
Captive breeding programmes may sometimes make use of IVF. Table 7.1 presents some of the stages that happen during an IVF procedure. They are not in the right order. Complete Table 7.2 to show the correct sequence of events. One of the events has already been placed in the correct position.