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chapter 9 lesson 1
people and enviroment
Question | Answer |
---|---|
mining can have a what time of impact on habitats when it pollutes soil and water | negative |
the human population is about 6.7 | billion |
earth has a limited amount of | resources |
the largest number of individuals of a given species that earths resources can support | carrying capacity |
when did the human population reach 1 billion people | 1800 |
how long did it take the human population to double to 2 million people | 50 years |
when did human population begin to increase sharply | 1900 |
what factors caused the human population to increase | clean water, improved health care and technology |
what might happen to resources if the population continues to rise | there wont be enough resources and people will eventually start to die |
describe the growth of the human population for most of human history | linear growth/steady growth |
how has human population changed over the past 2000 years | huge jump in population |
explain how the population of species X changed over time | population has increased and decreased in a little amount of time |
what is carrying capacity | largest number of individuals of a given species that earths resources can maintain for a long time |
what happened to species X when it reached its carrying capacity | fluctuated |
what likely happened to resource availability when species X exceeds its carrying capacity | lowered |
what will happen if Species X exceeds its carrying capacity again | it will keep rising and falling without enough resources for everyone |
what is population | members of a species living in a given area |
what is population explosion | sudden rise in human population/ j shaped curve |
about when did humans experience a population explosion | 1800 to 1900 |
what reason might have lead to the population explosion | clean water, technology, and improved health care |
how many people live on earth today | about 6.7 billion |
does earth have enough resources to support the human population | as of now but we cant pass the carrying capacity |
less people are dying and more people have health insurance/increase of people | improved health care |
a natural source of supply or support | resorce |
carrying capacity, population, resources | all are provided and supported by resources |