Anything living in the environment that is used by people is called a(n) ______________________.
NATURAL RESOURCE
100
Clear-cutting and selective cutting are two major methods of _________.
LOGGING
100
The number of different species that live in an area is called the area's ___________________.
BIODIVERSITY
100
Protecting the Earth's biodiversity helps protect medicines that may exist in _________.
NATURE
100
The disappearance from Earth of all members of a species is called ______________________.
EXTINCTION
200
A natural resource that is always available is called a _________________.
RENEWABLE RESOURCE
200
An amount taken from a resource that does not harm the future supply of the resource is called a _______________,
SUSTAINABLE YIELD
200
In an ecosystem, biodiversity has both economic value and _____________.
ECOLOGICAL VALUE
200
A cancer-fighting chemical found in the Pacific yew tree is called _______________.
TAXOL
200
A species that could become an endangered species soon is called a _____________________.
THREATENED SPECIES
300
Putting harmful substances into Earth's land, water, or air is called ___________________.
POLLUTION
300
Catching fish faster than they can breed is a situation called __________________.
OVERFISHING
300
Species that may become extinct in the near future are called ____________.
ENDANGERED SPECIES
300
Some ____________ in rain forest plants can be used to fight human diseases.
CHEMICALS
300
Genes determine an organism's ______________.
TRAITS
400
_____________ are natural resources that are not replaced as they are used.
NONRENEWABLE RESOURCES
400
Raising fish and other ocean organisms for food is called _____________.
AQUACULTURE
400
The major cause of extinction is _____________________.
HABITAT DESTRUCTION
400
When the American Medical Association called for the protection of Earth's biodiversity, their goal was to preserve the ______________________ that may exist in nature.
UNDISCOVERED MEDICINES
400
The illegal killing or capture of animals in the wild is known as _______________.
POACHING
500
To help balance the different opinions on an environmental issue, decision makers weigh the ______ and ________ of a proposal.
COSTS and BENEFITS
500
What are two fishing methods that harm fish that have been outlawed.
1) CYANIDE POISON
2) DYNAMITE STUNS
500
What is a species that affects the survival of many other species in an ecosystem?
KEYSTONE SPECIES
500
How was the use of taxol on cancer patients successful? Name TWO ways it helped.
1) STOPPED CANCER SPREADING
2) TUMOR SHRINKAGE
500
Explain how habitat destruction affects species.
SPECIES LOSE THEIR HOME.IF THEY CANNOT FIND A SUBSTITUTE NICHE, THEY MUST RELOCATE. IF THEY CANNOT RELOCATE, THEY WILL DIE.