What have you learned in the chapter about how humans can minimize their effects on food webs and
nutrient cycles?
What will be an ideal response?
We have learned that human activities disrupt or affect food webs and nutrient cycles. Eliminating the
existence of a lower level species may not seem very significant, but it may have a huge impact on that
particular ecosystem. Also, we must take steps to conserve water, and prevent fertilizers and other
disruptive substances from becoming runoff into our water supplies. We should develop more efficient
machines to reduce the amount of greenhouse gases produced. Globally, we should have zero
population growth. In short, there is much we can do individually and as a species to minimize our
impacts on food webs and nutrient cycles.
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Maintaining a relatively constant body temperature independent of external temperature is referred to as
A) heterothermy. B) ectothermy. C) poikilothermy. D) homeothermy.
Scar formation is defined as:
a. primary union b. regeneration c. mitotic cellular repair d. fibrous connective tissue repair
You work for a successful company that sells maternity clothes. They have asked you to evaluate whether Australia or Singapore would be a better country to expand into with new stores. What keyword will help you find the data you need to make this evaluation?
A. Metapopulation B. Dispersal C. Range expansion D. Demographics
Collecting ducts in the kidney lead immediately into
the a. renal cortex. b. renal medulla. c. renal pelvis. d. ureter. e. urethra.