On the basis of nutrient content, a lake that has received large amounts of runoff from farms, feedlots, or sewage is classified as a(n) ________ lake
Fill in the blank(s) with correct word
eutrophic
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The eggs of which of the following intestinal parasites are not commonly found in feces and must be detected by other diagnostic techniques?
a. Giardia lamblia b. Cryptosporidium parvum c. Clonorchis sinensis d. Enterobius vermicularis
Primary and secondary xylem that can no longer transport water and solutes, and can store defensive
compounds, is called
a. bark. b. heartwood. c. vascular cambium. d. sapwood. e. secondary epidermis.
Winkler and Sheldon used the _____ to study _____ in swallows and martins
a. mating method; mating systems b. mating method; nest building c. comparative method; mating systems d. comparative method; nest building e. reproductive method; nest building
The letter B indicates a(n) ____
a. producer b. herbivore c. detritivore d. carnivore e. decomposer