Food Chains and Food Webs Key question What
Food Chains and Food Webs Key question: - What are food chains and food webs and how do they work? - Why is it important to ensure a balance between components of the ecosystem?
Simple food chains A plant is eaten by a caterpillar. The caterpillar is eaten by a bird. The bird is eaten by a fox. Sun Plant Caterpillar Bird Fox Food chains start with energy from the sun to grow a plant that is eaten by an animal. Chains usually have about 3 -5 species. Mini Task: You have 30 seconds to write down another simple food chain.
Plants Match the group with the description Decomposers: Things that cause breaking down or rotting away Animals Producers: They produce their own food using carbon dioxide and water. Fungi/Bacteria Consumers: Things that eat other living things (can be herbivores, omnivores or carnivores).
Food webs The Food Web is a series of food chains all connected to each other. Plants are eaten by a variety of consumer animals and then those animals may be eaten by a variety of different carnivores.
How confident are you? If I asked you to identify the different types of components of a food web how confident are you that you could do this? Very Confident Maybe Not at all. Can you show the class?
Low confidence? ? ? Then complete the sheet to help build it up. Confident? ? Then create your own food web of 10 parts and identify the following components: - Producers - Herbivores - Omnivores - Carnivores
Threatening a food web There are lots of things that threaten a food web… How many can you name? (1 minute) The biggest threat is us (HUMANS) Watch the video and make notes on how we threaten food webs (web of life) and the effect this has.
Finally… Answer the following Question: Why is it important to ensure a balance between components of the ecosystem? Help Desk: 1) Think back to the video we just watched. Challenge: What component of an ecosystem is the most important and why?
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