| A | B |
|---|
| How are estuaries distinct from other environments? | plankton support fish, 75% human fish eaten, protected refuge |
| What is the difference between rivers and wetlands? | Rivers -flowing water, Wetlands- ie: marshes saturated by H20 |
| If plants are growing along the edge of a pond, what part of the pond are they a part of? | Littoral Zone |
| Watershed? | regions of land that drain into a river, a river system, or another body of water |
| What is the bottom of a lake called? | Benthic Zone |
| How many people live on Earth? | 6 billion |
| What is true about Earth’s human carrying capacity? | Earth cannot support an infinite number of people. UNKNOWN |
| Define renewable resources | Replenishes itself quickly enough so that it will not be used faster that it can be produced. |
| Example of renewable resources? | Water, sunlight, wind |
| Nonrenewable resources? | Used more quickly that it can form. |
| Example of nonrenewable resources | Oil, coal |
| When could a renewable resource become nonrenewable? | If it is not used carefully, they can become nonrenewable. |
| ecological footprint | amount of land to produce & maintain enough food & water, shelter, energy, & waste |
| 2 components make up smog | Particulates and ground-level ozone |
| What makes normal rain become acid rain? | pollutants such as nitrogen oxides and sulfur oxides become part of the water cycle |
| How do greenhouse gases affect Earth’s atmosphere? | CO2, water, and methane molecule absorb energy reradiated back into atmosphere |
| What would Earth be like without the greenhouse effect? | Greenhouse gases act as insulators and slow the loss of heat through the atmosphere |
| What is global warming? | Trend of increasing global temperature |
| How can fertilizers used on lawns and fields affect a lake? | Runoff from farms & cities may contain toxic chemical - disrupt the chemical balance of lakes, freshwater ecosystems at risk |
| What is an indicator species? | species that provides a sign, or indication, of the quality of the ecosystem’s environmental conditions |
| Why are frogs sensitive to pollutants in water? | Skin is moist and they take in whatever is in the water |
| How can governments protect ecosystems? | EPA-development of many policies and regulations to protect the US environment |
| What is sustainable development? | natural resources are used and managed in a way that meets current needs without hurting future generations |
| How is selective cutting of trees instead of clear cutting an example of this? | Land will not erode and species remain in the area because only certain trees are left behind. |
| What is habitat fragmentation? | Occurs when a barrier forms that prevents an organism from accessing its entire home range. |
| What is an umbrella species? | species protected under the Endangered Species Act |
| How can introduced species disrupt ecosystems? | Pose threat to stability of ecosystem if prey/crowd on native species |
| Name a major cause of extinction | When a species habitat changes, the species cannot sustain life. |
| Causes of habitat fragmentation | often cause by roads or the harvesting of forests |
| What is a result of an ecosystem losing biodiversity? | affect the survival of all species in an ecosystem, decreases the medical and technological advancements, difficult for ecosystem fo withstand future change |
| Example of umbrella species | Spotted Owls |
| What type of organism is likely to be most affected by biomagnification of a pollutant? | Has the most serious effect on species near the top of the food chain |
| 18. What happens during biomagnification? | pollutant moves up the food chain as predators eat prey, accumulating in higher concentrations in the bodies of predators. |
| difference between fat-soluble & water-soluble pollutants | Water-soluble dissolve in water, Fat-soluble stay in the body of fat of organism -move from on org. to another |
| Imagine that an introduced species results in the local extermination of a primary consumer. How might this change affect the larger ecosystem? | The other organisms in the area could take over and cause an imbalance of organisms. |
| Imagine that an introduced species results in the local extermination of a primary consumer. How might this change affect the larger ecosystem? | An introduced species could also not have a predator to keep it under control resulting in overabundance of the introduced species. |
