Population and its Impact
6-1 How Many People Can the Earth Support?
Concept 6-1 We do not know how long we can continue increasing the earths carrying capacity for
humans without seriously degrading the life-support system that keeps us and many other sp
Unit 4A: The Human Population Guiding Notes
Standard of Living
Environmental Consequences of Consumption
A Brief History of Human Population
1. Agricultural Revolution (10,000 yrs ago)
Biodiversity, Species Interactions, and Population Control
Core Case Study: Southern Sea Otters: Are They Back from the Brink of
Hunted: early 1900s
Why care about sea otters?
Unit 3A Biodiversity & Ecosystems Management PPT Outline
An ecosystems stability refers to its apparently unchanging nature over time.
inertia -the ability to resist disturbance
resilience - the ability to recover from external disturbance
Demographic Transition Part 2 PPT
As Countries Develop, Their Populations Tend to Grow More Slowly
First death rates decline
Then birth rates decline
Carrying capacity (K)
Maximum population a given habitat can sustain
No Population Can Grow Indefinitely:
J-Curves and S-Curves (3)
Starts slowly, then accelerates to carrying capacity when meets
environmental resistance (J-Curve)
Environmental Risks & Toxicology
Environmental Health, Risk, Pollution and Toxicology
Risks and Hazards
risk expressed as a probability;
risk assessment using data, hypotheses and models to estimate the probability of
harm to human health, society, or the
Unit 3B Forestry & Management PPT Notes
Goal: Sustainable Forests
Sustainable forests occur when a forest is managed so that a resource in it can be harvested
at a rate that does not decrease the ability of the forest ecosystem to continue to provide tha
Study Guide For UNIT II EXAM
Primary vs secondary succession
Secondary succession examples- abandoned farmland. Marlboro is an example of
primary succession- physical make new soil. No new soil.
6-3 How Does a Populations Age Structure Affect Its Growth or Decline?
Concept 6-3 The numbers of males and females in young, middle, and older age groups determine how fast a
population grows or declines.
A Populations Age Structure Helps Us Make Project