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Bio 189 exam

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Bio 189 exam
1. Human population growth prehistoric times to the present….
a. Has slowed considerably over the last 50 years
b. Follows an S-shaped curve.
c. Has been strongly influenced by density-dependent factors
d. Exhibits large oscillation around K
e. Roughly fits an exponential curve

2. The experimental design used in the Ribeiroia limb abnormality study ensured that the individuals handling the tadpoles, examining the adult frogs and compiling the data did not know which treatment (if any) was assigned to a particular tub. This type of experimental design is commonly referred to as the…
a. Pasteur effect
b. Multiple hypotheses method
c. Double blind method
d. Scientific method
e. Paradox of science
3. The main atmospheric gases responsible for the natural “green house” effect include carbon dioxide(CO2), methane (CH4) and….
a. Oxygen(O2)
b. Carbon monoxide(CO)
c. Volatile organic compounds
d. Nitrogen(N2)
e. Water vapor (H2Ov)
4. Identify the phenomenon that contributes to the tremendous marine biodiversity at the polar regions
a. Stable temperatures throughout the year
b. Diverse sunlight
c. Melting ice sheets
d. Low humidity
e. Upswelling currents
5. Why is the atmospheric ozone (O3) layer important?
a. Blocks harmful ultra violet UV irradiation
6. Identify a simple formula to calculate the intrinsic growth rate (r)
a. Quantity of primary producers consumed by consumers per unit time
b. Ratio of the number of reproductively active individuals to the entire population
c. Height and weight increase per unit time
d. Birth rate minus death rate per unit time
e. Amount of time required for the population to double

7. Identify the two factors that an ecologist could use to predict the type of terrestrial biome in any part of the world.
a. Latitude and longitude
b. Size and age structure of the human population
c. Distance from the equator and nearest ocean
d. Temperature and precipitation
e. Area of fresh

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