Water "beads up" on synthetic fabric such as polyester but binds to cotton. What is the most likely explanation for this?
A. Polyester is more flexible than cotton.
B. Polyester is not a naturally occurring substance, whereas cotton is a naturally occurring substance.
C. Polyester fibers are thinner than cotton fibers.
D. Polyester is nonpolar, whereas cotton is polar.
Answer: D
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The greatest rate of extinction of all time is/was probably caused by ____
a. an ice age b. unknown reasons c. formation of Pangea d. human activity e. asteroid impact
What is the intensity of that color?
a. 25 b. 50 c. 75 d. 100
Your friend wants to know why birds such as boobies and birds of paradise have elaborate mating rituals. You explain that:
1.Behavioral rituals are a way to keep a bird from breeding with the wrong species, since the rituals are specific to each species. 2.Birds are social and need a way to attract a mate. 3.Birds have evolved mating rituals as methods to display their elaborate and beautiful plumage. 4.Mating rituals have evolved to keep males from mating with more than one female.
In India, golden jackals that have been expelled from their pack have been known to attach themselves to a particular tiger, trailing it at a safe distance in order to feed on the big cat's kills. What type of relationship exists between the jackal and the tiger?
A. mutualism B. predation C. parasitism D. competition E. commensalism Clarify question: What is the key concept addressed by the question? What type of thinking is required? Gather Content: What do you already know about symbiotic relationships? What other information is related to the question? Choose Answer: Given what you now know, what information is most likely to produce the correct answer? Reflection on Process: Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?