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Chapter 9.1

People and the Environment

QuestionAnswer
What is carrying capacity? the largest number of one species that an ecosystem can support over time
What is population? all the organisms of the same area at the same time
Mining can have a ________ impact on habitats when it pollutes soil and water. negative
The ________ increase in human population happened in the last few centuries. greatest
Earth has a ________ amount of resources. limited
What is the human population? about 6.7 billion
__________ is the largest number of individuals of a given species that Earth's resources can support. Carrying capacity
Improved health care leads to healthier people and increase in population
Describe the growth of the human population for most of human history. There wasn't a growth in human population, the population stayed about the same.
When did the human population reach 1 million people? 1800
How long did it take the human population to 2 million people? 1900 years
When did the human population begin to increase sharply? 1800
What factors caused the human population to increase? Industrial Revolution Medical, scientific, and technical advances Clean water
What might happen to the resources if the population continues to rise? The resources could run out.
True or False: The human population has increased greatly. True
Do you think the current population rate will continue? Yes because the population has been increasing for hundreds of years.
What is a population explosion? the sudden rise in human population
About when did humans experience a population explosion? 1800's
How many people live on Earth today? 6.7 billion
Did improved health care lead to the population explosion? Yes
Does Earth have enough resources to support the human population? Yes because it has not exceeded its carrying capacity.
When will Earth not have enough resources to support the human population. Once the population exceeds its carrying capacity.
True or False: If the resources run out, Earth will not be able to support humans. True
Resource: amount of resources available to support a species
When the population reaches its carrying capacity, what happens to the resources? There are no longer enough resources to support a species.
When the population and resources interact, what happens? They can cause negative and positive impacts.
Created by: mcclejon5143
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