Introduction to Environmental Science

Agriculture  Agroecosystems differ from natural systems:  Monoculture – large areas planted with a single species  Agricultural globalization  Ecological Perspective on Agriculture  Genetically modified crops are becoming common  2.3rds of US soybeans, corn and cotton are now defined as genetically modified strains  Reduces use of herbicides a

EVR | 1001 | Introduction to Environmental Science | Agriculture  Agroecosystems d

 What is energy  Energy can neither be created nor destroyed  First law of thermodynamics (law of conservation)  Energy can be converted form one form to another  Kinetic energy (energy of motion  Potential energy  Positional energy  Energy in chemical bonds  Energy in electromagnetic radiation (light)  Energy in matter itself  Second law of thermod

EVR | 1001 | Introduction to Environmental Science |  What is energy  Energy can 

 Human population growth rate is at 1.2%  Human pop. Peaked at 2.1% in 1965-1970 with rapid improvement of healthcare and food production.  Stages of pop. Growth  Stage 1  Early period of hunter and gatherers  Stage 2  Rise of agriculture  Stage 3  Industrial revolution  Stage 4  Currently, allowed for population density & increase in human pop.  Doubli

EVR | 1001 | Introduction to Environmental Science |  Human population growth rate

 Decision making is a process of steps  Formulate clear statement  Gather information  Is data always accurate?  There are always errors  No measurement is completely accurate  Scientific theory  Grand scheme that relates and explains many observations and is supported by a great deal of evidence.  Science a theory has the highest level of certainty o

EVR | 1001 | Introduction to Environmental Science |  Decision making is a process

 Bio-geo-chemical cycles  Biochemical cycles are pathways for transport and transformation of matter within four areas that comprise the earth:  Biosphere – the living earth  Lithosphere – the solid  Hydrosphere – liquid earth  Atmosphere – gaseous earth  Biogeo chemical cycles are the reason for the difference  Element – fundamental type of matter

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