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Ch23 Biology Study N
Question | Answer |
---|---|
El Nino | A disruption of the normal air and water circulation patterns in the pacific ocean leading to unusual weather in many parts of the world |
Extinction | The dying out of a species |
Biodiversity | The number and variety of organisms in a given area during specific period of time. |
Some affects of El Nino are | beneficial to humans |
What is the greatest threat to the worlds future | Exploding human population |
How much of the worlds tropical forests have been destroyed | about 1/2 |
The main reason for loss of biodiversity is | habitat destruction |
El Nino results in | a cutoff in the upwelling of nutrients in the ocean |
El Nino is | Not man made |
Extinction of species had been speeded up by | Activities of people |
Environmental concerns | Diversity of species, ground water contamination preservation of nonrenewable resources (such as topsoil) |
Insects have... | The greatest diversity and richness of all organisms |
Destruction of the tropical rain forests.... | -Threatens the existence of species -Provides more pastures for farmland -Is done partly because of the need for lumber |
Which time is the greatest threat to biodiversity | Present time |
What are utilitarian uses of biodiversity? | -Food -Timber -Recreation |
What is the first steps to solving our environmental problems? | Educating the public about environmental problems and their costs |
What is the circulation of the Earths atmosphere is caused by | solar heating |
What is the study of environmental science? | It uses biological principles to look at the relationships between humans and Earth. |
What is the first step to in addressing an environmental problem? | Assessment |
What is a strategy for conserving biodiversity in developing countries? | Ecotourism |
Conservation biology | Seeks to identify and maintain natural areas |