ENVS 1000 Final Exam Questions And Answers With Verified Solutions
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Course
ENVS 1000
Institution
ENVS 1000
ENVS 1000 Final Exam Questions And Answers With Verified Solutions
where does upwelling typically occur? ANS along the coasts
the rate of species extinction most closely resembles the rate of... ANS human population growth
what type of organisms are most likely to go extinct during mass ex...
ENVS 1000 Final Exam Questions And Answers With
Verified Solutions
where does upwelling typically occur? ANS along the coasts
the rate of species extinction most closely resembles the rate of... ANS human population growth
what type of organisms are most likely to go extinct during mass extinctions? ANS large top predators
which trophic level is responsible for converting solar energy into other energy forms? ANS producers (plants)
which biome thrives in the coldest and driest conditions? ANS tundra
which biomes can be found in North America? ANS desert. tundra, taiga, temperate deciduous forests
why will energy use increase in the future? ANS 2.3 billion people are in rapidly rising economies and use an
increasing (but still small) amount of energy - per capita use is still far behind
what is biogeochemical cycling? ANS the movement of elements or molecules between the living and nonliving
parts of Earth involving biological, geological, and chemical processes
what is the process by which microorganisms in soils and bacteria inside the nodules of certain types of plants
(mainly legumes) converts unreactive, atmospheric nitrogen into reactive nitrogen that can be used by other
organisms? ANS nitrogen fixation
eutrophication is an increase in algal growth triggered by excess nutrients. what is the primary source of excess
nutrients that lead to eutrophication? ANS surface runoff fertilizing from large-scale conventional agriculture
when a phytoplankton absorbs a chemical at a rate faster than that at which the chemical is lost, the process is
termed as... ANS bioaccumulation
what is biomagnification? ANS chemicals accumulate and become more concentrated at each trophic level of
the food chain
, native americans used pinyon (pine nut) from the Utah forests as a medicine, what type of ecosystem service is
this? ANS provisioning service
precipitation is quantified as the sum of runoff, stored water and... ANS evapotranspiration
what are the four main reasons an overall yield from agriculture has increased in the last 100 years? ANS
improved crop varieties, fertilizer use, advances in pest control. irrigation
As developed countries grow economically, what fundamental shift to you tend to see in their citizen's diets, and
what impacts does this have on agriculture and natural resources? ANS Transition to more of a meat-based
diet, as opposed to a plant-based diet. Meat production requires more resources (e.g., animal feed production and
irrigation), and can have increased negative environmental impacts
What are the four main problems associated with food and agriculture today? ANS Unequal production of food
Unequal consumption of food
Overconsumption of resource intensive foods
Diversion of food to other products and waste
Do we currently produce enough food to feed all 7 billion people on the planet today? ANS Arguably Yes - we
produce enough food to feed everyone on the planet but there are problems with transportation, storage,
distribution, nutritional content, and cost of food
Explain the difference between breeding process for traditional crops and genetically modified (GM) crops ANS
Traditional breeding uses sexual reproduction where as GM breeding alters the crops' genetic make-up through
modern genetic techniques.
What is most of the oil in the US used for? What is most of the natural gas in the US used for? ANS
Transportation; electricity generation and domestic (home) use
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