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How does the increase in the influx of tourists in a city during the holiday season or special occasions affect the ecosystem of the city?
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- Which of the following is a negative consequence associated with both slash-and-burn and monoculture? a) Decreased yield b) Increased pollution c)Ecosystem disruption d)Reduced biodiversityFor each of the following actions, state one or moreof the three scientific principles of sustainabilitythat are involved: (a) recycling aluminum cans;(b) using a rake instead of a leaf blower; (c) walkingor bicycling to class instead of driving; (d) taking yourown reusable bags to a store to carry your purchaseshome; and (e) volunteering to help restore a prairieor other degraded ecosystem.At which point in the trophic pyramid is the greatest arount (not percentage) of energy lost? A) Between the primary producers and the primary consumers B) Between the primary consumers and the secondary consumers C)Between the secondary consumers and the tertiary consumers D) Between the secondary consumers and the primary producers
- Are per capita carbon emissions highest in urban, suburban, or rural areas? Why?1) A scientist finds that the gross primary productivity of the grasslands of the central United States is 55 g / m2 / year. If the respiration loss is 33 g / m2 / year, what is the net primary productivity? a) subtraction from gross productivity and respiration.b) The same as primary productivity.c) The value of respiration.d) The sum of gross primary productivity and respiration.What effect does pollution have on farmlands?
- Which of the following are important biotic factors that can affect the structure and organization of an ecosystem? A)temperature, water B)nutrient availability, soil pH C)predation, competition D)precipitation, wind E)light intensity, seasonalityA family travels from New York City to Costa Rica three times a year for a vacation. The family would like to purchase some forested land in the Catskills, keeping the trees intact as an offset to the carbon dioxide they produce travelling each year. How much forest must they purchase? Use the following assumptions to measure the carbon offset provided by this intact forest. The biomass of the forest increases at an annual rate of 2.8 × 105 kg/ha. The forest biomass is 45% carbon by mass. There are four people in the family. 2 kg of CO2 is produced each mile per person on the flight. The round-trip distance is 4,500 miles. There are 2.47 acres in one hectare. Calculate the mass of carbon, in kilograms, that is accumulated and stored in 1.0 ha of this forest in one year. Show your work. Calculate the mass of carbon, in kilograms, that is emitted by the family as a result of their round-trip flights to Costa Rica each year. Show your work. Calculate the number of acres of forest…c) Deforestation and loss of biodiversity is a problem in many forests in different parts of the world. In no more than 400 words. discuss the effects and consequences due to deforestation and loss of biodiversity in rain forests.
- which of the following statements about algal bloom and eutrophication is true? 1. Eutrophication is typically caused by the removal of nitrogen and/or phosphorus 2. algal blooms cannot produce toxic substances that threaten drinking water 3. when algae in an algal bloom die, decomposition produces excess oxygen, which can kill fish 4. algae populations grow when limiting nutrients become more availableWhat are the two major environmental issues in the Middle East region? Which of these two do you think is also a concernWhich of the following statements about the effects of clear-cutting on the Amazonian forest are true? Select all that apply. a) Soil moisture is likely to decline. b) Nutrient export is likely to decline. c) Species diversity is likely to decline. d) Atmospheric CO2 is likely to decline.
