The key reason we should care about recovery of the southern sea otter population is
a. the fact that they are a keystone species
b. their charismatic personality, which makes them pleasant to observe
c. because they are a food source for humans
d. because they are a food source for tuna, which is a food source for humans
e. the fact that they are a keystone species and because they are a food source for tuna
A
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Which of the following is not an agent of transport?
A) Alluvial fan B) Wind C) Gravity D) Glacier
In 1968, an ecologist named Garrett Hardin published a paper describing the "tragedy of the commons," which he described as occurring when individual self-interest inevitably leads to overuse and abuse of a shared resource
Which of the following types of resources is the kind of shared resource that Hardin described in his paper? A) A renewable resource B) An economic resource C) A common pool resource D) A finite resource
A negative feedback loop can also be described as a ____ feedback loop.
A. chaotic B. corrective C. tipping point D. harmful E. throughput
Everything else being equal, the more CO2 in the atmosphere, the ____________________the surface air
Fill in the blank with correct word.