Life: The Science of Biology
11th Edition
ISBN: 9781319010164
Author: David E. Sadava, David M. Hillis, H. Craig Heller, Sally D. Hacker
Publisher: W. H. Freeman
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Chapter 57.2, Problem 2R
Summary Introduction
To review:
Whether it is reasonable to guess that the concentrations of the carbon dioxide (CO2) could be lowered by the primary producers, present in the water bodies and on land by providing a proof in support of the answer.
Introduction:
The plants use CO2 during the process of photosynthesis and fix it in the form of glucose, which is available as the food to different organisms of the earth. The carbon available after respiration and
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Which one of the following sentences is NOT true?
Select one:
Compared with other land-based food production systems, fisheries and aquaculture have a relatively small overall carbon footprint.
Global fish production from capture and culture operations contributed up to 1.5% to the world’s CO2 emissions.
CO2 emissions by marine and inland fishing vessels were about 0.5% of the total global emissions.
Being a minor contributor in global terms, fisheries and aquaculture have no opportunities to mitigate emissions of greenhouse gases.
What does the term ’leakage’ mean in the context of regulating greenhouse gas emissions? and why is this important to consider?
Lastly, notice the yellow graph for "Net Exports": in 2008 it was about +400,
meaning the US exported 400 million gallons of biodiesel. But for the past
several years "Net Exports" has been in negative territory, meaning that we
IMPORT biodiesel from other countries! (this isn't surprising, notice that green
consumption is consistently larger than blue production). The US first started
importing biodiesel in the year
U.S. Biodiesel Production, Exports, and Consumption
Print Dow
2,500
• Production
+ Net Exports
+ Consumption
2,000
1,500
1,000
-500
-1,000
2001
Last updated October 2018
2004
2007
2010
2013
2016
Printed on: Aay 10
Millions
gallons
Chapter 57 Solutions
Life: The Science of Biology
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- Aside from the rise in mean temperature and CO2 levels, what are some other pieces of evidence from global warming? Discuss.arrow_forwardFrom a practical standpoint, it is difficult to use CO2 supplementation in a greenhouse during the summer months in Ontario. Why? asap pleasearrow_forwardAn estimated 1000 kg of plant plankton are needed to produce 100 kg of animal plankton. The animal plankton is in turned consumed by 10 kg of fish, the amount needed by a person to gain 1 kg of body mass. i) explain why the amount of biomass declines at each successive trophic level.arrow_forward
- Altered biogeochemical cycles combined with climate change increase the vulnerability of biodiversity, food security, human health, and water quality to a changing climate. a)How to control human activities to not increase the carbon dioxides level in the atmosphere and nitrogen levels in the biosphere ?arrow_forwardsupport or refute the following statements based on what you learned about energy flow, biogeochemical cycling, decomposition, trophic levels, and keystone species. You may add a diagram or illustration to support your answer. Shark fin soup can cause the collapse of coral reef ecosystemarrow_forwardThe concentration of carbon dioxide has been rising in the Earth’s atmosphere at an unprecedented rate. Explain why this increase is happening in terms of chemical reactions and emissions sources. Identify two ecosystem consequences of this enrichment. Describe some ways the problem can be addressed.arrow_forward
- Define the problem: What problem are you trying to address as an environmental engineer? Explain the repercussions of this problem on the Kalba sea and the whole coastline area. Aside from marine organisms, who would be affected by this problem? Would you consider this oil spill to be particularly severe for taking place in summer during the month of August? Compare the effects of this oil spill if it were to take place in the month of February.arrow_forwardWhen it comes to avoiding the worst impacts due to climate change, three things are sure: First, the need for (adaptation; mitigation; geoengineering; carbon capture and storage) will be inevitable. Second, (adaptation; mitigation; geoengineering; carbon capture and storage) should not be used as a primary solution. And third, (adaptation; mitigation; geoengineering; carbon capture and storage) should be the main component in climate policy.arrow_forward11) The chart below compares the greenhouse gas emissions of several fuel sources. Greenhouse Gas Emissions of Fuel and Energy Sources Sugarcane Ethanol Cellulosic Ethanol Fuel > Gasoline Corn Ethanol Energy > Source Fossil Fuels Biomass Biomass Biomass Source: Adapted from http://energy.itgoverns.com An accurate prediction that could be made regarding the information shown in the chart is that A) fossil fuels emit the least amount of greenhouse gases the use of biomass-based fuels instead of fossil fuels will greatly decrease the production of greenhouse gases B) C) the use of any one of the ethanol sources for fuel will each produce more greenhouse gases than the use of gasoline for fuel D) a total change from gasoline to ethanol as a fuel would have no effect on greenhouse gas emissions Greenhouse Gas Emissionsarrow_forward
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