Ch2 Environmental Sciences

atmosphere – A layer of gases around the earth. It is very thin, 1/100 of Earth's diameter (peach fuzz). It absorbs harmful solar radiation, burns up meteors, transports and recycles water and other chemicals, moderates climate. Primarily made up of Nitrogen (78%) and Oxygen (21%).
erosion – Processes by which rock, sand, and soil are broken down and carried away (i.e. weathering, glaciation)
tire tracks on the soil – What is not evidence that wildlife lives in the area?
atomic number – number of protons in an atom
fossil fuels – Both human communities and natural communities do not need
kinetic energy – moving matter has kinetic energy because it has mass and velocity
estuary – an area where fresh water from rivers mixes with salt water from the ocean
At-site neutralisation – A method of acid mine drainage prevention where chips of an alkaline mineral are placed over the sulphur mineral deposits in the mine.
What are the four types of macromolecules in living organisms? – 1) carbohydrates
2) proteins
3) nucleic acid's
4) lipids
agriculture – The practice of growing , breeding, and caring for plants and animals that are used for food, clothing, housing, transportation, and other practices.
limiting factor – An environmental factor that prevents a population from increasing.
Heterotrophic – Organisms that are unable to construct their own food from inorganic sources, and therefore must consume other organisms or organic molecules from the outside environment. Function as consumers or decomposers in food chains.
C – When biologists speak of "survival of the fittest," which of the following attributes do they consider most important to the concept?

A. the ability of the fastest individuals to avoid predators
B. the ability of the strongest individuals to capture prey
C. the ability of the most fertile individuals to successfully reproduce
D. the ability of the most high-tolerance individuals to withstand temperature extremes
E. the ability of the most colorful individuals to attract mates

Cons of petroleum – reserves will be depleted soon; pollution during drilling, transport and refining; burning makes CO2
competition – Interaction among organisms that want the same resource in an ecosystem
Maturation – The formation of crude oil from biological deposits in the sea. The deposits are buried and exposed to extreme heat and pressure, where oil forms with a layer of natural gas above it as a by-product.
albedo – the percentage of light received by a surface that is reflected and scattered
What are soils in tropical rain forests like? – quickly depleted of nutrients when forest is removed

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