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#[[How to Collect the Knowledge of the Community]] ====Risk Managment====

...n spread to cause infestations over large areas of water causing a variety of problems. It grows in mats up to 2 metres thick which can reduce light and ...cumented. In the last 10 years the rapid spread of the plant in many parts of Africa has led to great concern.

.... Little effort is made to reclaim the valuable nutrient or energy content of this waste. Some municipalities use "treated" sewage effluent to irrigate n ...ir and recycling. In many developing countries there exists a whole sector of recyclers, scavengers and collectors, whose business is to salvage ‘waste

=The Basic of Biomass Roofing= ...ustrially-produced roofing material that includes a significant proportion of biomass material.'''

...s: dehydration and decomposition. The Ecosan concept is based on following principles:</p> <li>Prevent diseases (must be capable of destroying or isolating faecal pathogens)</li>

...h="465" height="18" align="left" valign="top" | 2. SPECIAL CHARACTERISTICS OF VETIVER GRASS ...al characteristics2.3 Ecological characteristics2.4 Cold weather tolerance of vetiver grass2.5 Summary adaptability range2.6 Genetic characteristics