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Science Ecology and the environment

Food chains and webs

Lava lizard eating an insect
Galapagos giant tortoise eating cactus pad
© Patrick Moldowan / CDF

Introduction

Learning objectives

  • To understand and recognise the terms food chain and web.
  • To identify species that make up a food chain and web in Galapagos.
  • To know that energy is transferred up the trophic levels through consumption.
  • To understand the inter-relationships between species in a food web.

Students’ outcomes

  • To give examples of species that make up different food chains and webs from different habitat zones of Galapagos.
  • To explain how food chains and food webs illustrate the transfer of energy between species.
  • To explain the consequences on a food chain or web, should a species suffer a setback.

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