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"excrement" - 3 õppematerjali

Homeless
2
doc

Homeless

carried by insects or rodents (). In arid()regions, drought leaves the poor without clean water for drinking or bathing. In temperate climates, including in the major cities of developed countries many of the homeless poor are harmed by or die of exposure ()to extreme winter cold. Inadequate shelter almost always accompanies inadequate sanitation and unhygienic practices. Because the poor in developing nations commonly have no running water or sewage() facilities, human excrement and garbage accumulate, quickly becoming a breeding ground for disease. In cities, especially in ghettoes() and shantytowns that house only poor people, overcrowding can lead to high transmission rates of airborne diseases, such as tuberculosis. In particular, the incidence ( ) of acquired immune deficiency syndrome (AIDS) among poor people is higher than average. In developed countries tramps ( ) , hobos (-) , dossiers ( ) , down-and-

Keeled → Inglise keel
21 allalaadimist
Tundra swans
50
odp

Tundra swans

● Leave their nests immidiately Lifespan/Longevity ● Longest known – 24,1 years old (in wild) ● Expcted lifespan – 15 to 20 ● In captivity – 20 to 25 Food ● Herbivorous ● Consume plants ● Focus on the flowers, stems, roots, tubers ● Feed by dipping their heads underwater Economic importance of human ✔ Feathers can be used for coats, pillows, blankets, mattresses, winter clothing ✔ Their excrement can be used as a fertilizer to help with crop and grass growth ✔ Also hunted for meat ✗ Very territorial; will violently peck when they feel threatened ✗ Crop pests ✗ Carry avian influenza – linnu gripp Ecosystem roles ● Host several parasites – heartworms, guinea worms, gizzard worms, avian malaria ● Have mutualistic relationship with sago pondweed - penikeel ● Use pondweed as a food source during

Maateadus → Maakasutuse planeerimise...
2 allalaadimist
Biogas – The source of future energy
26
docx

Biogas – The source of future energy

The percentage of the inorganic dust particles is brought down by combining water with the excreta in a 1:1 ratio. The rate of feeding of any biogas manufacturing plant that is based on dung is 3,500 kilograms per day. Under normal circumstances the microbial content of the biogas is maintained by the addition of 2% of the expended slurry of the slurry of the fresh dung. 1% calcium ammonium nitrate of the dung is combined with the slurry in such cases. At times waste of kitchens and excrement of human bodies is used in these processes. The human excreta are supposed to occupy, at the most, 3% of the slurry. The addition of human excreta is crucial in this context as it increases the amount of production of biogas. This is because human excreta have high nitrogen content. The ideal temperature for producing biogas is within 35 to 38 degrees Celsius. If the temperature is lower than that then the production of biogas may go down as well. If

Keeled → Inglise keel
4 allalaadimist


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