We look after living things To date, around two million species have been identified. These include plants, animals, fungi, and other living things that are invisible to the naked eye. However, scientists are discovering new species every day. Some experts believe that we only know 10 % of the species that inhabit our seas and oceans. The variety of living things on Earth is called biodiversity. What can we do to preserve biodiversity? 1 LEARNING SITUATION What is the difference between living and non-living things? Name two different groups of invertebrates. Think of another question to ask the class. QUICK QUIZ! 6 · s i x
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