Topic 1
The three Environmental Value Systems
Anthrocentric, ecocentric, technocentric
What direction does energy flow within the food chain?
Up
What is biodiversity?
A measure of all organic life in a given area
What is a biome defined by?
Temperature and moisture
What does extinction mean?
That there are no more of that organism left in the world
What law of theromdynamics says energy can not be destroyed or created?
1st Law
What kind of relationship is it when both organisms benefit from the relationship?
Mutualism
What drives Evolution forward?
Natural Selection
What is the difference between an animal's Fundamental and realized Niche?
A Fundamental Niche is everything an organism is capable of filling, while Realized is only what the environment requires of an organism
What does separates a primary producer from other organisms?
Primary Producers produce their own food through photosynthesis or chemosynthesis
What is the point where an ecosystem cannot be returned to an equalibrium and has to change called?
Tipping Point
What are three type of graphical pyramids meant to show the amount of life present in an area?
Pyramid of Numbers, Pyramid of Biomass, Pyramid of Productivity
What is the main threat to biodiversity?
Human Actvity
What is each link in the food chain called?
A Trophic Level
What is entropy?
disorder within a system that increases over time
What is the full name of DDT?
DICHLORODIPHENYLTRICHLOROETHANE
What kind of species is the first to start the process of succession at the start of an ecosystem?
Pioneer Species
What 1972 treaty banned the trade of endangered animals?
CITES(Convention on the Trade of Endangered Species)
How much energy is transferred from one trophic level to the next?
10%
What four elements do the four suffixes represent?
Hydro-
Atmo-
Geo-
Bio-
Hydro- = Water
Atmo- = Air
Geo- = Earth
Bio- = Life
What is the measure of humans impact on the environment
Eccological footprint
What is it called when you scale the abiotic factors in an Environment
Environmental Gradient
is the WWF/Greenpeace run by governments or are they private companies?
Non-Govermental Agencies
What is the soil in the center of the the soil triangle called?
Loam
How do you calculate the percentage density of a population?
Total number of individuals in the quadrants studied
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Total number of quadrants