How do food webs relate to the idea of biological magnification of toxins?
What will be an ideal response?
When there are toxins present in the soil, water, etc., they are absorbed into organisms in the bottom of
the food chain. As you progress up the food chain, the amount of toxins present will increase. This is
why researchers often study the effects of toxins on small, seemingly insignificant species.
Determining the deleterious effects of these toxins on lower level organisms may alert humans to the
ultimate danger of these substances.
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The most reliable source of all essential amino acids in humans is:
A. meat. B. beans. C. corn. D. sunflower seeds. E. Doritos.
Eukaryotic cells contain
a. a nucleus b. DNA c. plasma membrane d. mitochondria e. All of these are correct.
Statements about what a researcher expects to happen to one variable if another variable changes are called ____
a. predictions b. hypotheses c. experimental variables d. theories e. scientific research
Kinetoplastids are ____
a. non-photosynthetic b. parasitic c. ciliated d. non-photosynthetic and parasitic e. non-photosynthetic, parasitic, and ciliated