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after a few hundred years normal growth, English oak trees introduce substances to recycle the brittle heartwood and leave the tree hollow. The outer shell is then structurally stronger to resist wind forces and carries on in a modified form for a few hundred more years
All that is on clay-marl soils where it is the dominant species; on lime soils it dies much earlier
Full EXIF Info | |
Date/Time | 01-Nov-2009 12:23:12 |
Make | Nikon |
Model | NIKON D80 |
Flash Used | No |
Focal Length | 50 mm |
Exposure Time | 1/200 sec |
Aperture | f/8 |
ISO Equivalent | 100 |
Exposure Bias | |
White Balance | |
Metering Mode | multi spot (3) |
JPEG Quality | |
Exposure Program | manual (1) |
Focus Distance |
copyright; please look at ORIGINAL size