Enst 201 Lecture 9Outline of Last Lecture I. Food ProductionII. Pesticide TreadmillIII. Green RevolutionI. U.S. (The obesity-hunger paradox)IV. Threats to food security Outline of Current Lecture I. Factors affecting food supplyII. What do we do?Current LectureI. Factors affecting food supplya. Climate change i. Higher temperature near the equator is impacting grain yield ii. Leading to more severe weatherb. Phosphorusi. Rely on mining phosphorus from rocks ii. Concentrated in certain areas around the world1. Morocco dominates the phosphorus supplyiii. Algae can be used as biofuel but you need to use phosphorous c. Wateri. Supply of freshwater is decreasingii. Inefficient usage and distributionThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.iii. Rate of usage exceeds replenishing rateiv. South East Asia and South Asia gets water from Himalaya1. But glaciers are disappearing so the river and streams have slower rate of flowd. Overfishingi. Tragedy of the Common 1. Ocean is open access so there are problem with ownership and the managing of it is poorii. Dynamite fishing1. Throw explosive into water and the fish will float to the topiii. Blue Fin Tuna1. Going extinct iv. Very difficult to monitor the oceane. Human Population Growth i. Puts pressure on food growth ii. Forces us to find new ways to produce foodf. Desertification g. Agriculture runoff causing dead zonesh. Ocean acidificationi. Putting more carbon dioxide into the ocean makes the water more acidic II. What do we do?a. Recycling fertilizer like human wasteb. More efficient to eat less meat i. Problem: The opposite is happeningii. As the middle class grows, in like China and India, meat consumption is increasing c. Looking into alternative crops d. Reduce food waste e. Biotechnologyi. Taking genes and moving them sometimes species or even kingdomsii. Cons/ Why people are against it?1. Not natural- People are creating new lives which disturbs some people2. Allergens 3. Concern that large organizations could have power over GMO4. Unknown impacts on the
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