Year 9 · Autumn Second Half
Biology
3 lessons from 1 unit.
Unit B9 · lessons 1 to 3 of 6
Ecosystems and interdependence
Nothing in a habitat feeds itself alone. This unit follows the energy from the plants that capture it up through everything that eats, watches what happens when one species is taken out, and ends with the problem of counting a field you cannot count all of.
- 01Food chains and food websSystemNobody has ever found a food chain with ten links in it. There is a reason, it is arithmetic, and it decides the shape of every ecosystem on Earth.Open this lesson
- 02Predator and preyModelA fox eating rabbits is bad news for the rabbits. A fox population eating a rabbit population is something stranger: two numbers chasing each other round in a circle, neither able to win.Open this lesson
- 03Disturbing a food webSystemWhat happens to the rest of a food web when one species is taken out of it?Open this lesson
Back to all three sciences this half term The whole KS3 Biology course