Tree rings dating and changing climates dvd

Below are the most common reasons: This site uses cookies to improve performance by remembering that you are logged in when you go from page to page.

tree rings dating and changing climates dvd-70

Cameras and other instruments on spacecraft provide many types of valuable data about Earth's atmosphere..Predicting how our climate will change in the next century or beyond requires tools for assessing how planet responds to change.When the conditions are good the tree grows faster and so lays down more tissue in the year, resulting in a wider growth ring.Poor conditions mean slower growth, less tissue laid down and consequently a narrower ring.Tree growth can be affected by climatic cycles and seasonal cycles.The width of a tree ring shows the amount of growth that has taken place during one year and thus indicates the growing conditions for that year.