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Stages of growth, leaf, flowers, explanation of trees obvious reactions to seasons, underlying processes.
The BUFVC Moving Image Gateway includes over 1,650 websites relating to video, multimedia and sound materials. These have been subdivided into over 40 subject areas. To suggest new entries or amendments,...
An archaeologist and a botanist discuss the 18th-century practice of planting trees on prehistorical mounds and what happens when such trees become too old to survive.
The residue left after harvested trees are converted to timber and wood for other purposes such as fibre board and papeer pulp, represents one-third of the total mass of trees. It could be a valuable...
This programme condenses a week’s work with a mixed-abiity class and their teachers in a middle school. Its two general aims are to present to the children a view of the needs of trees so that the trees in...
Cameraria ohridella (Gracillariidae), the horse chestnut leaf miner, causes severe damage to horse chestnut trees. Its biology and the host-parasite-relationship have been investigated in the...
In Nepal, the Central American rain forests of Costa Rica and in Nigeria, slash-and-burn farming methods are showing long-term harmful effects. Where trees have been cleared the top soil becomes eroded and...
Looks at the frogs in Trinidad: a frog that builds a swimming pool for its offspring; one whose tadpoles move about in organised groups; the golden tree frog, which lives among the bromeliads - plants that...
Shows examples timber harvested from sustainably managed forests and eco-labelling schemes to reassure customers: in Sweden, one of Europe’s largest timber companies is selectively harvesting trees while...
Documents the rapid deforestation of Africa and analyses various solutions such as shifting to solar energy and improving traditional stores. Shot in Niger, Mali, Sengal and Nigeria, it shows how people are...
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Learning on Screen
Related searches have been automatically generated using the OpenCalais semantic analysis service.
Related searches have been automatically generated using the OpenCalais semantic analysis service.