2 ready-made review sets for this topic, 24 questions in all, marked SL or HL, to play as a class game on the projector. Free to host, and students join with a code.
How similar the population sizes of each species are in a community?
Topic 3 covers biodiversity at the levels of habitat, species and genetic diversity, how it is measured (species richness, evenness and Simpson's reciprocal index), and how it arises through evolution and speciation. Then the human impact on biodiversity, from overexploitation to invasive species, with the IUCN Red List; and conservation and regeneration: in situ and ex situ conservation, protected areas and their edge effects, international agreements such as CITES and the Convention on Biological Diversity, and rewilding. At higher level it adds how isolation leads to new species, artificial selection, the five mass extinctions and the Anthropocene, biodiversity hotspots, and ecotourism.
Play this set opens the set in splycr, where you can read every question and host it for your class straight away. Hosting needs no account, and students join with the code on the board. A free account lets you copy a set and edit it.
The questions come from the Biology by Bradford flashcard bank. Each one plays as multiple choice, and the wrong options are other answers from the same set.
ESS has had a higher level course since the guide first assessed in 2026. Sets marked SL suit every ESS student, because higher level students study the standard level content too. Sets marked HL cover the additional higher level material in topics 2 to 8; Topic 1 has none, so its sets are all SL. The three HL lenses (environmental law, economics and ethics) have no sets yet.
How similar the population sizes of each species are in a community?
Answer: Species evenness
Conservation that occurs outside the species' natural habitat (e.g. zoos, seed banks, botanic gardens)?
Answer: Ex situ conservation
Strips of habitat connecting isolated conservation areas, allowing species movement and gene flow?
Answer: Wildlife corridors
The five previous events in Earth history when large proportions of species became extinct rapidly?
Answer: Mass extinctions
Speciation in which a physical barrier, such as a mountain range or a sea, separates populations of a species?
Answer: Allopatric speciation
Tourism to natural areas that funds conservation and supports local communities?
Answer: Ecotourism
Every set plays in all eight modes. These two fit this topic best.
One student holds the throne and the class answers to take it, and a wrong answer from the champion costs double. Conservation terms reward the student who really knows them.
In situ and ex situ, richness and evenness, CITES and the CBD: a wrong answer heals the boss, so the class has a reason to get each one exactly right.