For the food chain in Fig. 7.1, state the letter in Fig. 7.2 that represents: a pyramid of numbers ................................................ a pyramid of biomass ................................................
State one organism in Fig. 7.3 that gets energy from the chambo fish.
State how many trophic levels are present in the food web in Fig. 7.3.
Using the food web shown in Fig. 7.3, state the name of an organism: feeding at the second trophic level ................................................ feeding at more than one trophic level ................................................
Suggest two reasons why the population of chambo fish has fallen.
Describe how endangered species can be conserved.
Describe what is meant by the term sustainable resource.