Chapter 6 Flashcards
What are the sources of excess CO2?**
Forest fires, volcanoes, cars, and the burning of other fossil fuels.
What are CFC’s?**
are chlorofloric carbons that could damage the ozone layer.
What are DDT’s?**
pesticides.
How do CFC’s harm the environment?**
they slowly damage the ozone layer.
How do DDT’s harm the environment?**
when the pesticides kill animals in a ecosystem it can affect the food chain.
What threatens biological diversity?**
List at least two types of activities that threaten biological diversity.
Humans Activity to include the following:
- Altering habitats
- Hunting species to extinction
- Introducing Foreign Species to new enviroments
Why is biodiversity important to humans?**
Give at least two examples of how humans have benefitted.
Because other species have provided us with many natural resources to include the following:
- Foods
- Industrial Products
- Medicines
What is an ecological “hot spot?”**
where significant numbers of habitats and species are in immediate danger or extinction as a result of human activity.
What is global warming?**
increase in the average temperature of the biosphere.
Are fossil fuels considered renewable or non renewable resources?**
Non renewable because when they are burned they are gone forever.
What does it mean if a pollutant is non biodegradable?**
It means it does not break down naturally.
Whose goal is it to protect the ecosystem?**
The government and conservation groups.
What does the ozone layer do?**
It absorbs a good deal of harmful UV rays because they can cause cancer, damage eyes, and decrease organisms’ resistance to disease.
What trophic level is most affected bu DDT’s?**
Tertiary/ Top level consumers.
What is sustainable development?**
a way to use natural resources without depleting them.
What is biodiversity?**
The sum total of the genetically based variety of organisms in the biosphere.
What is biological magnification?**
concentrations of a harmful substance increase in organisms at higher trophic levels in a food chain or food web.
What are the effects of Global Warning?**
Sea levels may rise enough to flood coastal area’s, affecting coastal ecosystems, as well as human communities.
Define the term Agriculture.
Section 6-1
Is the science and art of farming, which includes the cultivation of field soils, production of crops, and the raising of livestock.
Define the term monoculture.
Section 6-1
Practice of growing crops in which fields are panted with a single variety year after year. That is, one plant type planted year after year.
Define the term green revolution.
Section 6-1
The development of highly productive crop strains and the use of modern agricultural techniques to increases yields of food crops.
List three types of human activities that can affect the biosphere?
- Hunting and gathering
- Agriculture
- Industry
- Urban development (extra…learn it)
Identify three (3) of Earth’s resources on which humans and other organisms depend for the long-term survival of their species.
- Breathable Air
- Drinkable Water
- Fertile Soil
Define the term biodiversity.
Section 6-3
Is the sum total of the genetically based varierty of all organisms in the biosphere.
