About this document
IGCSE Biology Chapter 20: Organisms and Their Environment by tristanhsenoaji is a document available to read on EtoBox.
The document discusses energy flow in ecosystems, emphasizing the Sun as the primary energy source for organisms, which is transferred through food chains and lost as heat. It defines producers, consumers, and decomposers, and explains food chains and webs, including the impact of foreign species and overharvesting on ecosystems. Additionally, it covers pyramids of numbers, biomass, and energy, highlighting their advantages and disadvantages in representing energy flow and trophic levels.
- Author
- tristanhsenoaji
- Language
- EN