Komplet - Our Environment Part I. The Wood. Consequences of Environmental Pollution. - 20 mikro. preparatov
Vsebuje:
4511c Pine (Pinus), healthy leaves, t.s.
4512c Pine (Pinus) leaves damaged by acid rain, t.s.
4513c Fir (Abies), healthy leaves, t.s.
4514c Fir (Abies), stem tip damaged t.s.
4515c Beech (Fagus), healthy leaves t.s.
4516c Beech (Fagus), t.s. of leaves with destroyed epidermis and chloroplasts
4517d Rhytisma acerinum, tar spot of maples, consequence of single-crop farming
4518d Early leaf fall, caused by thawing salt
4519d Healthy lichen, indicator of clean air
4520d Damaged lichen, caused by air pollution
4521c Healthy wood of beech, t.s.
4522d Wood destroyed by fungus
4523d Polyporus, wood rot fungus, fruiting body t.s.
4524d Root nodules of Alnus, with symbiotic bacteria
4525d Spruce beetle (Cryphalus picea), larva t.s.
4526c Wood with normal annual rings, t.s.
4527c Wood with anomalous narrow annual rings caused by drought, t.s.
4528d Bark with larval galleries of spruce beetle, t.s.
4529d Pineapple-like gall on spruce caused by lice, t.s.
4530d Gall nut on oak caused insects, t.s.