Cambridge Cambridge IGCSE (9–1) Biology 0970 · 19.2

Food chains and food webs

Code: 19.2
In: 19 Organisms and their environment
Course: Cambridge IGCSE (9–1) Biology 0970
Board: Cambridge

Grade boundaries·Cambridge command words

Codes and titles are read by a script from Cambridge's published specification and have not been checked by a person. What each point covers is in the specification itself: Cambridge’s specification.

Points under 19.2

19.2.1 Food chains
19.2.2 Constructing food chains
19.2.3 Food webs
19.2.4 Producers
19.2.5 Consumers
19.2.6 Levels of consumers
19.2.7 Herbivores
19.2.8 Carnivores
19.2.9 Decomposers
19.2.10 Human impact on food webs
19.2.11 Pyramids of numbers and biomass
19.2.12 Pyramids of biomass versus numbers
19.2.13 Trophic levels
19.2.14 Identifying trophic levels
19.2.15 Pyramids of energy (Supplement)
19.2.16 Advantages of pyramids of energy (Supplement)
19.2.17 Inefficient energy transfer between trophic levels (Supplement)
19.2.18 Why food chains are short (Supplement)
19.2.19 Energy efficiency of eating crops versus livestock (Supplement)

Points in 19 Organisms and their environment

19.1 Energy flow
19.2 Food chains and food webs
19.3 Nutrient cycles
19.4 Populations