(a(i))[1]
Define fitness.
(a(ii))[2]
Suggest in what ways these adaptive features help mangrove trees survive in water.
(b(i))[2]
Estimate the biomass of one fiddler crab in grams. Give your answer to two significant figures and show your working.
(b(ii))[3]
Using the information in Table 2.1, sketch a pyramid of numbers for the food chain in Fig. 2.2. Place the number of each trophic level on the relevant part of your pyramid.
(b(iii))[4]
Explain why, using the information in Table 2.1, the shape of a pyramid of biomass would differ from the shape of your pyramid of numbers.