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English, 27.06.2019 01:30, geeez65

Why are some diurnal fishes harder to see in the evening than in the daytime? a) the movement on the reef blurs their shapes. b) their predators can only detect outlines. c) the light casts shadows that hide them. d) their skin color changes to blend in.

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Business, 22.06.2019 12:00, elianagilbert3p3hh63
Areal estate agent is considering changing her cell phone plan. there are three plans to choose from, all of which involve a monthly service charge of $20. plan a has a cost of $.42 a minute for daytime calls and $.17 a minute for evening calls. plan b has a charge of $.52 a minute for daytime calls and $.15 a minute for evening calls. plan c has a flat rate of $80 with 275 minutes of calls allowed per month and a charge of $.38 per minute beyond that, day or evening.a. determine the total charge under each plan for this case: 150 minutes of day calls and 70 minutes of evening calls in a month. (do not round intermediate calculations. round your answer to 2 decimal places. omit the "$" sign in your response.)c. if the agent will use the service for daytime calls, over what range of call minutes will each plan be optimal? (round each answer to the nearest whole number.include the indifference point itself in each answer.)d. suppose that the agent expects both daytime and evening calls. at what point (i.e., percentage of total call minutes used for daytime calls) would she be indifferent between plans a and b?
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Biology, 20.09.2019 20:20, hannah2718
The fish living near a coral reef feed off of small organisms found in the reef's crevices. some sea animals hide among the coral for protection against larger predators. even though it is not living, the sand under the coral reef is also useful as it holds the coral reef in place. identify the term given to these interacting organisms and the nonliving parts of their environment. a) habitat b) population c) community d) ecosystem
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Biology, 01.10.2019 21:30, flores1717
The fish living near a coral reef feed off of small organisms found in the reef's crevices. some sea animals hide among the coral for protection against larger predators. even though it is not living, the sand under the coral reef is also useful as it holds the coral reef in place. identify the term given to these interacting organisms and the nonliving parts of their environment. a) habitat b) population c) community eliminate d) ecosystem
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