A disease kills many flowering plants in a field. Bees obtain nectar from these plants, and some birds eat the bees.
Which sequence is most likely?
less nectar, fewer bees, less food for the birds
less nectar, more bees, more food for the birds
more nectar, fewer bees, less food for the birds
more nectar, more bees, more food for the birds
82 exam-style questions on Edexcel GCSE Biology 9.1 Ecosystems and interdependence, covering 9.1.1 Levels of organisation in ecosystems, 9.1.2 Abiotic and biotic factors, 9.1.3 Importance of interdependence, 9.1.4 Parasitism and mutualism, and 9.1.5 Determining number of organisms in an area. Each one has a worked solution and a mark scheme showing where the marks go.