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?
ANSWER: 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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a) Chloroplast b) Rough endoplasmic reticulum c) Smooth endoplasmic reticulum d) Golgi complex
Atoms in which the number of electrons does not equal the number of protons are known as
A. valences. B. isotopes. C. ions. D. isomers.
Compare and contrast the streak-plate method of isolation with the pour-plate method of isolation
What will be an ideal response?
________ are outgrowths of the epidermis that occur on the shoot.
A. Cuticles B. Trichomes C. Sieve cells D. Root hairs