Biology
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Sticklebacks
Change in Males during Spawning Time
More than fifty fish species live in our lakes and rivers. The sticklebacks count among the smallest native freshwater fish. The three-spined stickleback is of an inconspicuous colour almost all year long. But during the spawning season, something extraordinary happens: the body colour and behaviour of the males change. Therefore, this small and ordinary fish attracted the attention of behavioural scientists early on.
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Curriculum-centred and oriented towards educational standards
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Seal of approval
Quality seals such as the "Bio-Siegel", "Blauer Engel", "Stiftung Warentest" and up to 1,000 other seals represent characteristics such as sustainability, health or safety with regard to a product, a service or even a company.
Product Piracy
Counterfeiting takes place in almost all economic sectors – textiles, watches, car parts, machine parts, tools, accessories, software and medicines. Some counterfeits are easy to recognise, others are so well-executed that even experts have difficulty distinguishing between original and imitation. This DVD covers the development of a product from idea to manufacture. Once a product has become a trademark, product pirates appear on the scene.
Ideals of Beauty
1. What Is Beautiful?