2 results found for ,14-19-year-olds

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01:27:00

Nature’s marvellous medicine

by Diana Bowles
Nature’s marvellous medicine
for 14-19 and upwards,
Discussions | 14-19 and upwards | 10 years ago | 1078 views
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For hundreds of years we have used plants and their extracts for their healing properties. Ancient Egyptians chewed white willow bark to relieve fevers and reduce inflammation, and many years later scientists discovered that the bark contains salicyl....

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01:04:00

The origins of flowers

by Peter Crane
The origins of flowers
for 14-19 and upwards,
Lectures | 14-19 and upwards | 14 years ago | 1282 views
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Flowers are such a ubiquitous and familiar part of our modern world that it is easy to take them for granted. But as Darwin recognized, the exquisite details of their structure and appearance have been shaped by evolutionary processes over millions o....

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