An area of rainforest is cut down. It is replaced by a plantation of one species of tree.
The area is still covered in trees, but the biodiversity of the area falls.
Which statement explains why?
Only one type of habitat and food is left, so fewer species can live there.
The plantation trees take in more carbon dioxide, so animals cannot breathe.
The plantation trees are smaller, so they make less oxygen for the animals.
There are fewer trees in a plantation, so less food is made by photosynthesis.
109 exam-style questions on OCR GCSE Biology 6.1 Monitoring and maintaining the environment, covering 6.1.1 Field investigation of distribution and abundance, 6.1.2 Human interactions and biodiversity, 6.1.3 Maintaining biodiversity, and 6.1.4 Environmental change and distribution of organisms. Each one has a worked solution and a mark scheme showing where the marks go.