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Ch 9.1
science
| Question | Answer |
|---|---|
| The population of a town is the number of ________ who live there. | Living organisms |
| When scientists use the term ________, they mean all the members of a species living in a given area. | Population |
| Earth used to have a relatively _____ population of humans. | Small |
| Today, about ______ people live on Earth. | 6.7 billion |
| The greatest ________ in human population occurs during the last few centuries. | Increase |
| The term ____________ describes the sudden rise in human population that has happened in recent history. | Population Explosion |
| Some things that have caused this rapid population growth include improved _______ care and clean ______. | Health, Water |
| These and other technological advancements have allowed more people to live ______ and to ________. | Longer, Reproduce |
| People need certain things, such as _______, clean _____, and shelter, to survive. | Food, Water |
| All the things people need come from _______found on Earth. | Resources |
| Earth has limited ______. | Resources |
| The Largest number of individuals of a given species that Earth's resources can support and maintain for a long period of time is Earth's ___________ for that species. | Carrying capacity |
| If the ________ continues to grow beyond its carrying capacity, eventually, there will not be enough resources to support it. | Population |
| How people use resources affects the _________. | Environment |
| Many water pipes are made of _______. Obtaining the metal from the ground by _______ can destroy habitats and pollute soil and water | Metal, Mining |
| Most towels are made of ______, which comes from a plant. Growing plants often involves the use of _______ and other chemicals that pollute the environment. | Cotton, Fertilizers |
| The ______ you use while showering is a scarce resource in some places. | Water |
| _________ are often used to heat the water in showers. | Fossil fuels |
| Fossil fuels are ________ resources because they are used up faster than they can be replaced by natural processes. | Nonrenewable |
| Burning _______ releases pollution into the atmosphere. | Fossil fuels |
| Over the course of you're lifetime, your potential _______ on the environment. | Impact |
| Because we use many resources and because our resource use can have a ______ impact on the environment, it is important that we use _________ wisely. | Negative, Resources |
| Not all human activities have a ________ impact on the environment. | Negative |
| People can clean up litter and do other things that have a ________ impact on the environment or help reduce the impact of human actions on the environment. | Positive |
Created by:
cubeldel2300
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