Which variable (population growth rate, rate of increase in water use, or
precipitation) do you think has the least infl uence on water balance?
Explain. What will be an ideal response?
Answers will vary. By experimenting with each of the variables in the spreadsheet,
students may fi nd that the population growth rate has the most infl uence on water
availability.
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In speciation, two species breed to form one new species.
Answer the following statement true (T) or false (F)
The U.S. Federal Wild and Scenic Rivers Act of 1968 requires all federal agencies to consider the wild, scenic, or recreational value of rivers when planning river or adjacent land use.
Answer the following statement true (T) or false (F)
If forests are strictly managed according to the maximum sustainable yield model, some biodiversity would still be lost because ________
A) habitats for nesting birds are lost B) nearly all predators will be excluded C) forests are more susceptible to herbivore damage D) species whose habitat depends on mature trees in the top canopy layer will be excluded E) all the trees are of mature size leaving no room for new seedlings
Cytokines are which type of molecule?
A) complex lipids B) glycoproteins C) lipoproteins D) simple proteins