Tree ring dating lesson plan

Trees are a ubiquitous form of plant life on planet Earth.They are the lungs of the world, breathing in carbon dioxide and breathing out the oxygen on which animal life depends. Due to the sweeping and diverse applications of this data, specialists can come from many academic disciplines.There are no degrees in dendrochronology because though it is useful across the board, the method itself is fairly limited.Before this, their ancestors would have a recognisable tree form, believed to be that of a giant type of fern that began the process of developing a woody stem.Wood helps the developing tree to stay strong as it gets older and grows upwards, building new branches and drinking in more sunlight for photosynthesis reproduction.They come in all shapes and sizes from the smallest saplings up to the colossal redwoods of North America - it could be said that we take them for granted, yet they are vital to teaching us about many aspects of our past. Before then, tree ancestors may have looked slightly tree-like but they were not trees in any proper sense.

Typically, a bachelor's degree in any of the above disciplines are enough to study the data that comes out of dendrochronology.

Most importantly, assuming there are no gaps in the record (and even if there are short gaps), it can tell us the precise year that a certain tree ring grew (4).

The potential then, even with these two simple sets of data that we may extrapolate from the tree ring data, is enormous.

They live in all sorts of conditions too: in temperate and tropical areas and in arid locations, from mountain landscapes to the rainforests of the equator and the temperate uplands of Scandinavia, they are everywhere.

They are used for decoration in parks and gardens all over the world.

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From the 1980s, several seminal studies began at the University of Arizona (6), (7) studying the bristlecone pine of California and hohenheim oak in Germany.

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