IB ESS Topic 3 - Biodiversity and Conservation Exam Study Guide with Complete Solutions Latest Updated 2025/2026

IB ESS Topic 3 - Biodiversity and Conservation Exam Study Guide with Complete Solutions Latest Updated 2025/2026 environmental pressures - Correct Answer the factors (abiotic or biotic) in an ecosystem which put pressure on an organism's survival and increase competition (whether inter-species or intra-species) biodiversity - Correct Answer a combination of the species diversity, genetic diversity and habitat diversity of an ecosystem variation - Correct Answer the differences, either physical or genetic, between individuals of a species simpson's diversity index - Correct Answer a measure of diversity between similar ecosystems species diversity - Correct Answer the number of species (richness) and their relative proportions (evenness) in a community genetic diversity - Correct Answer the range of genetic material present in a gene pool or population of a species random genetic mutations - Correct Answer the small differences which may occur in an organism as a result of reproduction - these small changes may add up to create variation hotspots - Correct Answer an area of high biodiversity (which is under threat from human activities) endemic species - Correct Answer the species which only occur in one specific area