CAIE IGCSE Biology 19.2.10 Human Impacts on Food Chains & Webs
Practise using feeding links to explain how overharvesting or introducing a foreign species changes populations in a habitat.
- Syllabus
- 2026–2028
- Course
- Biology 0610
Exam points
- predict predator and prey population changes after a food species is overharvested
- justify each change by tracing reduced predation or reduced food through the web
- apply the same feeding-link reasoning to a foreign species introduced into a habitat
19.2.10—Food chains and food webs to describe question 1
A student recorded the information about an aquatic habitat.
Fig. 4.1 shows the student's notes.
Fig. 4.1
Humans also eat salmon.
Predict the impact on the feeding relationships shown in Fig. 4.1 of overharvesting of salmon.
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