Chapter 10 - BSC 1005
Resources that can be replenished naturally on a human timescale such as wate
Renewable Resources
plants animals wind sunlight and biomass.
Resources that form extremely slowly and cannot be replenished quickly such a
Non-Renewable Resources
coal oil natural gas and nuclear energy.
Renewable resources regenerate quickly enough to be used sustainably while
Meaning of Renewable vs Non-Renewable
renewables are finite and will eventually run out.
Every energy transfer increases entropy and some energy is lost as heat making
Second Law of Thermodynamics (Entropy)
energy transfer inefficient.
Ecosystems receive energy from the sun which producers convert into chemica
Energy Flow in Ecosystems
energy consumers then use.
As energy moves to higher trophic levels some is always lost as heat resulting i
Energy Loss Between Trophic Levels
energy available at higher levels.
Humans acting as primary consumers (eating plants) use energy more efficientl
Energy Efficiency of Human Diets
acting as secondary consumers (eating animals).
The estimated amount of land and water needed to produce the resources a p
Ecological Footprint
uses and absorb their waste.
Using resources in a way that meets present needs without compromising the a
Sustainability
of future generations to meet theirs.
Resources that can be replenished naturally on a human timescale such as wate
Renewable Resources
plants animals wind sunlight and biomass.
Resources that form extremely slowly and cannot be replenished quickly such a
Non-Renewable Resources
coal oil natural gas and nuclear energy.
Renewable resources regenerate quickly enough to be used sustainably while
Meaning of Renewable vs Non-Renewable
renewables are finite and will eventually run out.
Every energy transfer increases entropy and some energy is lost as heat making
Second Law of Thermodynamics (Entropy)
energy transfer inefficient.
Ecosystems receive energy from the sun which producers convert into chemica
Energy Flow in Ecosystems
energy consumers then use.
As energy moves to higher trophic levels some is always lost as heat resulting i
Energy Loss Between Trophic Levels
energy available at higher levels.
Humans acting as primary consumers (eating plants) use energy more efficientl
Energy Efficiency of Human Diets
acting as secondary consumers (eating animals).
The estimated amount of land and water needed to produce the resources a p
Ecological Footprint
uses and absorb their waste.
Using resources in a way that meets present needs without compromising the a
Sustainability
of future generations to meet theirs.
