KS3 Environment
This resource provides an engaging overview of food chains and food webs, illustrating how energy flows through ecosystems. It details the roles of producers, consumers (herbivores, carnivores, and omnivores), and top carnivores, emphasizing the interconnectedness within food webs. The potential impact of removing an organism on the food chain is explored through examples. Additionally, the concept of a pyramid of numbers is introduced, showcasing the population distribution of various organisms in a food chain. Great for KS3 students to learn about ecological relationships!
KS3 Environment
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Presentation Transcript
KS3 Environment W. Richards Worthing High School
The arrows show which way the energy is going in the chain Food Chains A food chain shows what is eaten by what…
Food webs Food webs contain many interlinking food chains…
e.g take out the crab: What would happen if an animal or organism was “taken out”? • The flat winkles would not get eaten, so their population would…? • The herring gulls would have less food, so their population would probably…? increase decrease
Top carnivore Secondary consumer Primary consumer Producer
Some definitions… Usually plants. Anything that takes energy from the sun. Animals that only eat plants An animal that eats producers An animal that eats primary consumers An animal that eats secondary consumers An animal that eats secondary consumers Eats only animals Not eaten by anything else Eats both animals and plants Producer fgfg Herbivore Consumer Primary consumer Secondary consumer Tertiary consumer Carnivore Top carnivore Omnivore
A “Pyramid of Numbers” A pyramid of numbers shows how many animals or organisms we are talking about. For example, consider the following food chain:
A pyramid of numbers for this food chain would look like this: One owl Some voles Lots of grass
Another example: Consider the food chain: GrassRabbitFoxFleas Lots of fleas One fox Some rabbits Lots of grass
