Year 9 · Spring First Half

Biology

3 lessons from 1 unit.

Unit B9 · lessons 4 to 6 of 6

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.

04Pollinators and food securitySystemIf every insect pollinator vanished tonight, you would not starve. You would also never eat an apple, a strawberry, an almond, a tomato or a square of chocolate again. Both halves of that sentence matter.Open this lesson
05Toxic build-up in a food chainProcessA concentration far too low to harm anything in the water can still kill the bird at the top of the chain. Nothing is added along the way. The arithmetic does it.Open this lesson
06Sampling an ecosystemInvestigationNobody has ever counted the daisies in a field. Every number you have ever read about how many of something there are was worked out from a sample — and a sample can be taken badly.Open this lesson

Back to all three sciences this half term The whole KS3 Biology course