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UCSB EEMB 2, SET 1(DR. EVENS) EXAM QUESTIONS AND ANSWERS GRADED A+ 2025/202

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UCSB EEMB 2, SET 1(DR. EVENS) EXAM QUESTIONS AND ANSWERS GRADED A+ 2025/202

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UCSB EEMB 2, SET 1(DR. EVENS) EXAM
QUESTIONS AND ANSWERS GRADED A+
2025/2026




Ecology - ANS -The study of the distribution and abundance of organisms

-the factors and interactions that determine distribution and abundance



Question Ecology answers... - ANS Where are they at, how many and why are they there?



Aristotle - ANS Historia animalium



Herodotus and Plato - ANS Providential Ecology



Graunt and Leeuwenhoek - ANS Population Growth



Buffon, Malthus, Quetelet, Verhulst - ANS Population regulation



Farr's Rule - ANS as the density of a population increases, the death rate will also increase



Edward Forbes, H.C. Cowles - ANS community regulation and succession

1 @COPYRIGHT 2026 ALLRIGHTS RESERVED.

, Robert Ross(1908) - ANS mathematical model of the spread of infectious disease

-systems analysis



some of the founders of modern ecology(exp): - ANS A.G. Tansley, F.E. Clements, Charles
Elton



Abiotic components - ANS non-living chemical and physical factors(temperature, light, water,
nutrients)



Biotic components - ANS living(biological) factors (other organisms, competition, predation)



Ecological Scales - ANS Biosphere>Ecosystem>Community>Pop.>Organism



Z test - ANS (sample mean-pop mean)/standard error-->(standard dev/sqrt sample size)



We reject the null hypothesis when... - ANS the p- value is less than the significance level of
.05



Biogeographic regions - ANS boundaries are set where species composition changes quickly
over short distances



Temperature - ANS tropics are hotter than temperate regions

-same amount of heat concentrated on smaller area at the tropics

-at poles solar radiation passes through a deep layer of atmosphere




2 @COPYRIGHT 2026 ALLRIGHTS RESERVED.

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