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The Green Revolution [AP Human Geography Unit 5 Topic 5]
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- hello there geographers and welcome back to the Mr sin Channel today we are going to continue talking about the different agricultural revolutions as we expand
- our conversation to the Green Revolution but before we do that I do want to remind you to take out your guided notes and follow along with the video you can
- get a copy of my guided notes by clicking the link in the description down below remember you need to be active in your learning not passive now
- the Green Revolution was characterized by high yield seeds and increased chemical usage and mechanized farming all of which led to a drastic increase
- in food production for Farmers allowing countries to have a greater food surplus which meant more food was accessible to the people and since the supply of food
- went up countries also saw the food prices decrease resulting in more people being able to afford food all of this was started thanks to the work of Dr
- Norman borlock who is known as the father of the Green Revolution Dr Boro ended up developing a new semid dwarf high yield disease resistant wheat
- variety that could prosper in the growing conditions in Mexico Dr Boro ended up transforming not just Mexico's agricultural production but Pakistan's
- and India's as well his work allowed for increased food supplies for countries around the world resulting in millions of lives being saved from starvation Dr
- Boro ended up winning a Nobel Peace Prize started the Green Revolution and is credited for saving over A Billion Lives from starvation now to get high
- yield seeds individuals such as Dr Boro used crossbreeding this is when different species of plants are mixed to produce a new variant that has the best
- genetic characteristics of both for seeds this often results in hybrid seeds that have shorter growing seasons and are more resistant to different climates
- But ultimately it's up to the scientist who is doing the crossbreeding for instance going back to Dr Boro his semi dwarf wheat varieties that
- revolutionized farming in Mexico and India had shorter growing Seasons which allowed Farmers to have multiple harvests in a year now one quick
- clarification I want to make here is that hybrid plants are different from genetically modified plants hybrid plants were a central part to the Green
- Revolution however genetically modified organisms or GMOs for short did not come until later make sure you don't mix that up on your test remember hybrid plants
- involve mixing different species of plants while GMOs involve altering in organisms DNA to achieve specific traits real quick before we go on I do want to
- point out that I know that many students mix up Concepts from the different agricultural revolutions so to help you out I created different practice quizzes
- for each of the different agricultural revolutions each of the quizzes also comes with explanations that explain why each answer is either right or wrong
- that way you can make sure that you fully understand the content to check out these resources simply go to my ultimate review packet by clicking the
- link in the description below now besides hybrid plants the Green Revolution also had new ad advancements in chemical usage such as chemical
- fertilizers pesticides and herbicides all of which led to increased yields of crops new chemical fertilizers such as nitrogen and phosphite allowed plants to
- grow faster compared to previous natural fertilizers pesticides stopped insects from destroying the crops which increased Farmers yield and herbicides
- targeted invasive plants to prevent weeds from growing in the fields allowing more water and nutrients to go to the crops lastly we saw the rise of
- mechanized farming with new Machinery often replacing manual labor making farming more efficient tractors irrigation pumps and Harvesters started
- to become more and more common across the agricultural landscape all of which led to increased food production a reduction in global hunger New Economic
- growth cheaper food and lower production cost now I do want to quickly highlight that while the increase in machinery and agricultural production did increase the
- amount of agricultural output it also decreased the amount of jobs for women who traditionally worked in agriculture this resulted in more inequalities
- between individuals in certain societies which leads us to the next part of the Green Revolution which is the negative consequences as Farmers started to use
- more and more chemical fertilizers pesticides and herbicides we started to see more soil degradation and water contamination occur while at the same
- time more and more Farmers started practicing monoculture farming which resulted in a loss of biodiversity remember biodiversity refers to the
- variety of life forms in a given geographic area and monoculture is when a farmer cultivates one type of crop livestock or fish species at a period of
- time so now instead of having a variety of species Farmers just focused on one this allowed them to become more efficient at producing that particular
- species but it did reduce the variety as well putting more strain on the ecosystem the Green Revolution also led to new economic opportunities as new
- large-scale Farms began to become more profitable however this also led to the decline of Family Farms as industrial Farms gained momentum now I do want to
- note that the Green Revolution did not single-handedly create Agro businesses but it did laid the foundation for them to become possible and definitely helped
- accelerate the growth of them this shift in production also led to unequal Economic Development with smaller Family Farms struggling to compete with large
- scale Farms you can see this globally as well many countries that are in the periphery or semi- periphery became more dependent on core countries and
- multinational corporations this is because large aggro businesses often controlled the high yield seeds and chemical fertilizers at the end of the
- day we can see that the Green Revolution increased the world's food security and transformed how we as a society produce food but it also created some new
- environmental and societal issues that still impact society today I will well there you have it that's the Green Revolution and now comes the important
- part you need to practice you can see a couple questions on the screen right now and you can check the comment section for the answers but more importantly go
- take those full practice quizzes on each of the Agricultural revolutions inside my ultimate review packet that way you can see if this is truly making sense as
- always thank you so much for watching I'm Mr sin and I'll see you next time online
Zum Nachlesen
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