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...simple form of ‘language’. Dolphins can be trained to respond to commands and perform tricks – and they can develop and vary these routines and imitate each other’s behaviour. On the other hand, the large brain and the folding of the cerebral cortex may be simply a function of the size of these animals, or a consequence of the need to produce and process such...

...simple psychological and practical approaches. Spending time in nature fosters an appreciation of our environment and can help regulate our emotions. Talking and spending time with like-minded people can bring a sense of togetherness. Learning about nature can maintain our curiosity about the natural world. Undertaking positive actions can ease our sense of helplessness...

...simple single-celled organisms called bacteria, and other microscopic forms of life, that play an important part in the working of the ecosystem. The most obvious components of the physical environment of the pool are the rock that surrounds it, the sea water in it, and the air above it (when the tide is out). But these physical factors are far from fixed. The tides, and...