4.5 Understand the concepts of food chains, food webs, pyramids of number, pyramids of biomass and pyramids of energy transfer

Food chain
Shows energy transfer between producers all the way to tertiary consumers. Only 1 line
eg: grass > zebra > lion

Food web
Shows links between various food chains within the same habitat or environment
eg:

Pyramid of numbers
Shows number of organisms in each trophic level and isn't always a nice pyramid shape
eg:

Pyramid of biomass
Shows mass of organism in each trophic level, and is almost always a pyramid shape
eg:

Energy transfer pyramid / chain
Shows energy transfer between organisms, typically in a food chain
eg