📘 قراءة كتاب The Social, Political and Environmental Dimensions of Urban Agriculture أونلاين
Biology is a natural science that is concerned with the study of life, its various forms and its function, how these organisms interact with each other and with the surrounding environment. The word biology in Greek is made up of two words: bio (βίος) meaning life. And loggia (-λογία) means science or study. Biology: the similarity of vegetation and animal cover on the edges of the African and American states, and the existence of the same fossil.
Branches of biology
Biology is an ancient science thousands of years old and modern biology began in the nineteenth century. This science has multiple branches. Among them are:
Cytology or cell science
Ecology or environmental science
نبذه عن الكتاب:
migration is short-distance, where a majority of the urban poor retain access to rural food
through land ownership or reciprocity exchanges (transportation is affordable), rural–
urban food transfers play a more important role in feeding the urban poor and selfprovisioning is more limited. This type of context is exemplified by Bruce Frayne's study
of Windhoek, Namibia, in this volume. In contexts where long-distance rural–urban
migration grows, where more of the urban poor have less access to rural assets, selfprovisioning becomes more important. UA has spread to become a critical source of food
for urban populations in countries affected by natural disasters (Honduras), economic
crises (Togo), civil wars (Armenia) and disease epidemics (Malawi). Several such factors
have endured for many years in Zimbabwe (Stephanie Gabel in this volume), where UA
on public land in Harare grew from 267 ha in 1995, to 4822 ha in 1990 and 9288 ha in
1994 (data from Maseva, 2003, p21).
The difficulties that the urban poor face in acquiring sufficient and healthy food from
traditional rural agriculture are compounded by policies that either neglect or discourage
– when they do not repress – the informal food systems on which the poor depend.
Policies often respond to globalization forces that may dictate both the supply and
demand options for UA
Who is the founder of biology?
The importance of biology
Areas of work in the field of biology
Theories of biology
Research on biology for the first grade of secondary school
سنة النشر : 2005م / 1426هـ .
حجم الكتاب عند التحميل : 3.33 .
نوع الكتاب : pdf.
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