Specific Species
The primary natural event that the proposed highway threatens to disrupt in the Serengeti National Park in Tanzania is the what?
great migration of wildebeest and other animals
true or false: Plants have never been our source of medicine, and our only medicines are chemical-based.
false
Differences in DNA composition among individuals within a given species is called
genetic diversity
The greatest cause of the worldwide loss of species is
habitat destruction
When the last member of a species dies and the species ceases to exist globally it is called
extinction
Approximately how many wildebeest are estimated to be in the migrating herd before the highway was proposed to cut through their path.
1.5 million
Global food industry has narrowed our diet to about ______ crop species and _____livestock species.
15; 8
Human beings sharing an instinctive love for nature and bonding with living things is called
Biophilia
The loss of a particular population from a given area (but not the entire species globally) is called _____________________________.
extirpation
The greatest diversity (number of different species) of organisms can be found in which group?
Insects
What is one of the reasons for the Bald Eagle’s decline in the United States?
hunting
DDT
loss of habitat
What is one of the reasons that biodiversity enhances food security?
It is a potential source of new food or genetic varieties of existing foods
What is the scientific discipline devoted to understanding the factors, forces, and processes that influence the loss, protection, and restoration of biological diversity
Conservation Biology
Species richness increasing as you near the equator is called?
Latitudinal Gradient
A powerful financial incentive for countries to preserve their natural wonders is ____________________________________.
Ecotourism
Bullfrog tadpoles are often sold as fish bait, even in areas where they do not naturally occur. When people buy 10 of them and don’t use them all, they often dump the remainder in the lake or river. This is an example of ________________________.
intentional introduction
What is an example of plant that was used to derive a medicine?
autumn crocus, pineapple, pacific yew, velvet bean, common foxglove, yellow cinchona
When individuals are bred and raised in controlled environments with the intent of reintroducing them to the wild it is called
Captive breeding
A species (usually a large one) that serves to protect other species in a greater environment is called a _______________________________________. An example is the panda bear.
Umbrella Species
Removal of species will always results in the greatest changes in an ecological system, called a trophic cascade?
Keystone Species
What is one of the reasons for the comeback of the bald eagle?
1) The nationwide ban on the pesticide DDT
2) strong legal protections and
3) proactive conservation efforts
4) Public awareness, initiated by Rachel Carson’s book Silent Spring
What is an example of an animal that could be of potential medical use?
sharks, horseshoe crabs, bears, cone snails, amphibians like the gastric brooding frog
An updated list of animals facing unusually high risk of extinction.
The Red List
A region that supports an especially great number of species that are endemic (found nowhere else in the world) is called a
Biodiversity Hotspot
True or False: A metapopulation is a network of subpopulations
True