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31 Cards in this Set
- Front
- Back
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Carrying capacity
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largest number of individuals an environment can support
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population
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all individuals of one species
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population explosion
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rapidly increasing numbers of humans
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landfill
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area where waste is deposited
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conservation
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careful use of resources
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composting
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piling yhard wastes where they can gradually decompose
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does the Earth have limited or unlimited resources
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limited
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by the time you are 75 years old you will have produced enough trash to equal how many
elephants |
8
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in 1998 what was the human population
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5.9 billion
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what are some reasons why population is increasing
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better medicine and nutrition and sanitation so people live longer
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Compared to other countries how much energy do people that live in the US
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__
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how can farmers increase producti8vity of croplands
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higher yield seed and chemical fertilizers
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what are herbicides and pesticides
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they reduce weeds insects and other pests that can damage crops
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what is a problem with removing vegetation
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the soil will erode easily
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How can no till farming be good for the environment
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the land is not loosened by plowing
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what percetage of cropland is used for livestock
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20%
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name 3 things trees are used for
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fuel paper lumber
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plants remove what gas
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carbon dioxide
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plants produce what gas
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oxygen
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what gas may contribute o a rise in temperature on earth
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carbon dioxide
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what percentage of garbage goes to landfills
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60%
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what is a sanitary landfill
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every days deposit is covered with dirt
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what is phytoremediation
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plants help remove certain metals from the soil
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how do the plants extact the metals
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absorb through their leaves
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what could be a problem with building with concrete and asphalt
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they cause the temperature to rise
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does the US have mandatory or voluntary recycling
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voluntary
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hazardous waste
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poisonous waste
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recyclabe
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any item that can be used and produced again
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recyclabe
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any item that can be used and produced again
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recyclable
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any item that can be used againg
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recyclable
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any item that can be used again
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