Biology 2485B Study Guide - Midterm Guide: Overgrazing, Soil Retrogression And Degradation, Soil Compaction
12 May 2016
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Document Summary
Our planet is populated by many species of living organisms. Which type of living organism has the largest population on our population: bacteria. Which country has shown significant and consistent increases in wheat yield in the last 60 years: china. The most significant source of emissions of air pollutants is: industry. Soil triangle is used by soil scientists to define the type of soil based on the composition of 3 soil types: clay, silt and sand. Application of organic fertilizer : such as manure to agricultural fields can pose human health risks if not utilized in full by field vegetation, urea is not organic. In the pesticide branch of agricultural products, the term evolutationary arms race refers to: chemists increase chemical toxicity to compete with resistant pests. Agent orange made famous in vietnam war, consists of 2 herbicides 24d and 245t. presently in. Canada: 24d is widely used, 245t is banned from agriculture uses.
