A species that is near extinction is called a(n)...?
Endangered species
200
What is the main chemical cause of global warming?
Carbon dioxide (CO2)
200
The use of DDT and its damaging effects on the environment is an example of...?
Biological magnification
200
Why do invasive species reproduce rapidly in their new environments?
Invasive species lack natural predators in their new environments.
200
Which type of biodiversity has the largest categories?
Ecosystem diversity
300
A species growing in a nonnative area is known as a(n)...?
Invasive species
300
What is the main chemical cause of the ozone hole?
CFCs
300
The building of a highway through a forest is an example of...?
Habitat fragmentation
300
How is habitat fragmentation related to species diversity?
Larger habitats lead to more species diversity. (More habitat fragmentation leads to less species diversity.)
300
Most of the recent increase in carbon dioxide levels can be attributed to what two human activities?
(1) The burning of fossil fuels and (2) deforestation
400
What is the definition of genetic diversity?
The sum total of all the different forms of genetic information carried by all organisms living on Earth today (all the differences in DNA between organisms)
400
What is the main chemical cause of ocean acidification?
Carbon dioxide (CO2)
400
Zebra mussels and Burmese pythons are examples of...?
Invasive species
400
What are two main effects of global warming?
(1) Rising sea levels, (2) the death of plants and animals, (3) extreme weather events (such as hurricanes and droughts)
400
Which type of biodiversity has the fewest subdivisions, and which type has the most subdivisions?
Ecosystem diversity has the fewest subdivisions; genetic diversity has the most subdivisions.
500
What is the definition of biological magnification?
When concentrations of a harmful substance increase in organisms at higher trophic levels in a food chain or a food web
500
What is the main chemical cause of acid rain?
Nitrogen and sulfur compounds
500
DDT was used to fight what organism and what illness?
Mosquitoes and malaria
500
What are three benefits to biodiversity?
Food, industrial products (such as clothing and cleaning supplies), and medicines (such as antibiotics and anticancer drugs)
500
What are the two major criteria for a chemical to cause biological magnification?
(1) The chemical must be nonbiodegradable. (2) The chemical must not be easily eliminated from organisms once consumed.