16.1 Population Growth
Earth's human population is about
6-8 billion
Particulates that can irritate your respiratory system or lungs are one form of
Pollution
How can fertilizers used on lawn and fields affect a lake?
They can simulate excess plant and algae growth
When an ecosystem loses biodiversity, it becomes
Less Stable
Selective cutting of trees instead of clear-cutting is an example of practicing
Sustainable Development
Which statement is true of Earth’s carrying capacity?
It has been increased by technology
In addition to particulates, smog contains
Ground Level Ozone
Deformities in an aquatic indicator species can reveal the
Quality of the water in which it lives
Which of these is a major cause of extinction?
Loss of Habitat
Name a way to make fisheries more sustainable?
Reduce harvests
Give an example of a nonrenewable resource?
Coal
Pollutants in the water cycle can cause rain to
become more acidic than normal
Pollutants that are fat-soluble
accumulate in an organisms body
A highway that keeps an organism from using its entire home range causes
Habitat Fragmentation
A species whose protection also protects other species is called
An Umbrella Species
Trees on Easter Island were cut faster than they could grow, so they became a
nonrenewable resource
How do greenhouse gases affect Earth’s atmosphere?
They show the loss of heat
What happens during biomagnification?
Pollutants increase in concentration as they move up the food chain
How can introduced species disrupt ecosystems?
By crowding out native species
The recovery of the bald eagle is partly a result of which law?
Endangered Species Act
The amount of land needed to support a person is called his or her
Ecological Footprint
The increase in global temperature is known as
global warming
Which of the following organisms is likely to be most affected by biomagnification of a pollutant?
Phytoplankton - Zooplankton - Fish - Hawk
Hawk
Which of these is a problematic invasive species in the United States?
Kudzu
Name a way in which governments can protect ecosystems?
Setting aside areas as public land