EEB 2100e Exam 2 Questions and answers
%land transformation caused by humans
44%amount of co2 concentration added by humans
50%amount of freshwater used by humans
nitrogenlimiting element for growth in many ecosystems
Industrial fixation (Haber-Bosch process)
Fertilizer crops (legumes) ...
EEB 2100e Exam 2 Questions and answers
%✔✔land transformation caused by humans
44%✔✔amount of co2 concentration added by humans
50%✔✔amount of freshwater used by humans
nitrogen✔✔limiting element for growth in many ecosystems
Industrial fixation (Haber-Bosch process)
Fertilizer crops (legumes)
Burning of fossil fuels✔✔how humans contribute to nitrogen fixation
runoff✔✔what causes eutrophication
50% of available freshwater, 70% of this is used for agriculture✔✔human water use
baby boomers✔✔generation with largest carbon footprint
Paleozoic
Mesozoic
Cenozoic✔✔3 eras of geological time
Neogene
Quaternary✔✔2 periods of geological time
Pleistocene
Holocene
Anthropocene✔✔3 epochs of geological time
KT boundary✔✔iridium rich boundary between the Cretaceous and the Paleogene ;
support for asteroid impact
pleistocene mega faunal extinctions
dawn of agriculture
globalization and columbian interchange
industrial revolution
the great acceleration✔✔start of Anthropocene theories
Palynology✔✔study of pollen
Primary research article
Review paper
Idea papers and perspectives
Commentaries✔✔types of scientific papers
125 trillion per year✔✔estimated value of nature
, Habitat destruction
Climate change
Exotic species invasions
Disease
Overexploitation of species✔✔main drivers of biodiversity loss
1960s✔✔peak of population growth rate
China and India (most dense city is Bangladesh)✔✔most populous areas
Sub-Saharan Africa✔✔where population is expanding the most
much of Europe and Japan✔✔where population growth is almost negative
2.5 children per woman✔✔current total fertility rate
Child mortality rate
Empowerment of women (education, opportunity)
Costs of raising children✔✔3 main factors affecting fertility rate
pollination, decomposition, nutrient cycling✔✔examples of ecosystem services
Metazoans✔✔multicellular animals
Large changes in atmospheric carbon dioxide concentrations
Release of methane from long term stores
Ocean acidification
Ocean anoxia
Bolide impacts✔✔main reasons for mass extinctions
pollination, herbivory, detritivory, nutrient cycling, pest control✔✔processes that
need insects
Russia, Australia, Amazon, and USA✔✔areas that have seen unprecedented fires
bees, moth, butterflies, flies, beetles, various bird, bats, other mammals, even
geckos✔✔most important pollinators
Bombus counts per square meter/minute on cape cod haven't changed since 1990
No change in bee communities in montane national park in Spain
Butterflied targeted for restoration have had their demographics turned around in
western and northern europe
Some aquatic insects increasing in number in Europe and USA✔✔examples of
insect populations that are NOT declining
59%✔✔percent of Connecticut covered in forest
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