Comparing internal and external fertilization

An activity to allow middle to lower ability students compare the two types of fertilization. students watch videos of external fertilization such as salmon or frogs and internal fertilization such as a puma.These can all be found on 'Arkive' (type 'mating' into search box). Discuss their different fertilization methods then choose the correct statements for each row. First one has been done. Nests can be both.