Document page

biology 0610printed 290 · PDF 290

SourcePortal capture, 9 Oct 2026

printed 290 · PDF 290

Page image rendered from the stored file at 110 dpi; it sharpens as you zoom. Outlines are placed from each region’s stored position on the page (612 × 792 pt).

no text layerread by OCR (tesseract5-eng@250dpi)

Source of this text: read by OCR. The better of the embedded text and OCR is kept.

Describe a sustainable resource as one which is produced as rapidly as it is removed from the environment so that it does not run out State that some resources can be conserved and managed sustainably, limited to forests and fish stocks Explain why organisms become endangered or extinct, including: climate change, habitat destruction, hunting, overharvesting, pollution species Describe how endangered species can be conserved, limited to: (a) monitoring and protecting species and habitats (b) education (c) captive breeding programmes (d) seed banks 290 Supplement Explain how forests can be conserved using: education, protected areas, quotas and replanting Explain how fish stocks can be conserved using: education, closed seasons, protected areas, controlled net types and mesh size, quotas and monitoring Describe the reasons for conservation programmes, limited to: (a) maintaining or increasing biodiversity (b) reducing extinction (c) protecting vulnerable ecosystems (d) maintaining ecosystem functions, limited to nutrient cycling and resource provision, including food, drugs, fuel and genes Describe the use of artificial insemination (Al) and in vitro fertilisation (IVF) in captive breeding programmes Explain the risks to a species if its population size decreases, reducing genetic variation (knowledge of genetic drift is not required)