Presentation on theme: "Agricultural Revolutions How did we get here?. Agriculture Is the raising of animals or the growing of crops to obtain food for primary consumption by."— Presentation transcript:
Agriculture Is the raising of animals or the growing of crops to obtain food for primary consumption by the farm family or for sale off the farm.
The Three Agricultural Revolutions First: allowed humans to stay in one place rather than follow animals. Also gave them more food. Second: changed farming by adding machinery. Third: involved changing farming by adding technology like adding chemicals and gps to watch animals.
First Agricultural Revolution From hunting and gathering to planting of seeds and raising animals. Very hard work and on a small scale. As food sources became reliable population grew. Animal domestication changed the world’s diet. People went from eating mostly plants to eating a lot of animals.
Second Agricultural Revolution From 1750 to 1900 in more developed world. Technology allowed for the increase in production and distribution of products. Fields could be double or triple in size with same amount of labor. Populations increase. Less developed countries are still in this era. Transportation for distribution became more reliable, food less likely to spoil. People left farm for urban areas.
Third Agricultural Revolution 1960s+ Uses biotechnology, genetic engineering. Takes place in labs and tested on farm fields. Plant and animal hybrids that maximize growth and production. Increased use of fertilizers and chemicals. Industrial farming. Climate is not as important.
Third Cont. Created a global agricultural market. Wheat grown in North Dakota is shipped to Asia. Corporate farms are where Developed countries get their food. Enough food is produced to feed the world but there are barriers in distribution.
Worlds Food Supply On average the world produces enough food to feed all 7 billion people However, some countries lack the food security to ensure all people are receiving food. This can cause undernourishment
Food Security Physical, social and economic access at all times to safe and nutritious food 1/8 th of the people living in the world do not meet this definition of food security
Dietary Energy Needs UNFAO- says people must consume, on average 1,800 calories per day. Average world consumption however is around 2,780 kcals. Average for developed countries 3,470kcal Average for U.S 3,800kcal Average for developing 2,630kcal
Conclusions Because these are averages we can assume that a number of individuals in developing regions are not receiving as many calories needed to maintain a healthy life. Calorie intake is low in regions where people must spend a large part of their income on food.
Undernourishment Dietary energy consumption that is continuously below the minimum requirement for maintaining a healthy life and carrying out light physical activity. Not consuming enough calories for easiest of physical movement
Africa’s Food-Supply Struggle Sub-Saharan Africa is struggling to keep enough food to feed their growing population. Famine is a very real threat with little agricultural land available and a growing population.