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potential unit 5 q/a
| Question | Answer |
|---|---|
| Nitrogen and phosphorus are referred to as macronutrients because ________. | they are required in large amounts for organisms to survive |
| What happens to southern FL's Biscane Aquifer as too much freshwater is drawn out to meet the demands of high population in Miami? | Salt water seeps into the underground aquifer mixing with freshwater |
| In some areas, cattle on an open range may compact fragile soils while grazing. This can damage plant roots, leading to fewer, smaller plants, which may in turn cause cattle to graze more and work harder to obtain food. This is an example of a | positive feedback loop |
| Choose the correct type of feedback loop - Ice is white and very reflective. A warmer atmosphere melts the ice exposing dark ocean water which then absorbs more heat and warms the atmosphere even more. | Positive feedback |
| Which of the following describes matter and energy flow in an ecosystem? | Energy flows through an ecosystem, whereas matter is recycled within an ecosystem. |
| The amounts of chlorophyll-a have declined in Chesapeake Bay. How does this relate to water quality? | Reduced levels of chlorophyll-a mean less algae growth. Too much algae can lead to reduced dissolved oxygen which would kill underwater life. |
| In an aquatic ecosystem experiencing eutrophication, levels of dissolved macronutrients ________ and dissolved oxygen levels ________. | increase; decease |
| How does burning fossil fuels contribute to global warming? | Carbon present in coal, oil, and natural gas becomes carbon dioxide when these fuels burn. |
| What actions do the Chesapeake Bay Program take to make the water quality better? | Reducing pollution by preventing agriculture and urban runoff |
| The benefits obtained from the regulation of ecosystem processes is which type of ecosystem service? | Regulating service |
| Which statement best describes the relationship between temperature and productivity of terrestrial biomes? | Warmer biomes tend to have higher productivity than colder biomes, given sufficient moisture. |
| Overall, it appears that terrestrial biomes with more available fresh water ________. | tend to have more productivity than those without much fresh water |
| Solutions to environmental problems ________. | should be designed with the goal of sustaining Earth's natural capital |
| ________ is any network of relationships among a group of components, which interact with and influence one another through the exchange of energy, matter, or information. | A system |
| The non-material benefits such as inspiration and spiritual well-being people gain from ecosystems is which type of ecosystem service? | Cultural Service |
| Choose the correct type of feedback loop - A warmer atmosphere cause more evaporation, more cloud cover which reflects solar energy back out of the atmosphere causing the atmosphere to cool down. | Negative feedback |
| What is the likely result of the increasing amounts of fertilizers in the major rivers emptying into oceans? | Eutrophication, followed by hypoxia, is a likely result, ultimately leading to less CO2 uptake and less oxygen released. |
| The eutrophication that has taken place in Chesapeake Bay, the Gulf of Mexico, and other locations appears to be due to ________. | excess nutrients from fertilizers |
| The biosphere is best defined as ________. | all Earth's organisms and the nonliving environment with which they interact |
| The material benefits people get from ecosystems is which type of ecosystem service? | Provisioning service |
| Many organisms that undergo chemosynthesis use ________ instead of ________ to fuel the processes that convert carbon dioxide into sugars. | hydrogen sulfide (H2S); sunlight |
| By damming rivers and creating reservoirs, we are ________. | increasing evaporation |
| In 2019 what the updated condition of the Chesapeake Bay according to water quality data? | Water quality has reached a record high of 42% meeting clean water standards |
| Which of the following would reduce nutrient pollution in the Mississippi River and Chesapeake Bay watersheds? | closing or update sewage treatment plants that lack a process for removing nitrogen and phosphorus from wastewater |
| Ecosystem services ________. | are economically valuable services provided by natural systems |
| A system stabilized by negative feedback, with opposing processes offsetting each other, is said to be in ________. | dynamic equilibrium |
| Mining operations create waste that includes toxic waste and rare-earth elements. This waste can make it into our waterways killing fish and polluting our waters. What is this waste called? | Acid mine drainage |
| Which location on the map has the highest net primary productivity? | B (south america) |
| Which of the following is the best example of an ecosystem service? | soil microbes fixing atmospheric nitrogen |
| Which of the following is an example of an ecosystem? | a colony of leafcutter ants, the leaves they harvest, the fungi that they cultivate and tend to, and the soil nutrients and moisture needed for their garden |
Created by:
kiwi_murphy04