A trophic cascade is the effect of on . Select one: a. detritivores; decomposers b. flooding; terrestrial ecosystems c. top consumers; lower trophic levels d. producers; first-level consumers e. top consumers; one another Clear my choice

In order to gauge public opinion about how to handle iran's growing nuclear program, a research group surveyed 1010 americans by telephone and asked them to rate the threat iran's nuclear program poses to the world on a scale of 1 to 10. describe the population, sample, population parameters, and sample statistics. identify the population in the given problem. choose the correct answer below.

A. j. was a newly hired attorney for idle time gaming, inc. even though he reported directly to the president of the company, a. j. noticed that the president always had time to converse with the director of sales, calling on him to get a pulse on legal/regulatory issues that, as the company attorney, a. j. could have probably handled. a. j. also noted that the hr manager’s administrative assistant was the go-to person for a number of things that would make life easier at work. a. j. was recognizing the culture at idle time gaming.

Emery pharmaceutical uses an unstable chemical compound that must be kept in an environment where both temperature and humidity can be controlled. emery uses 825 pounds per month of the chemical, estimates the holding cost to be 50% of the purchase price (because of spoilage), and estimates order costs to be $48 per order. the cost schedules of two suppliers are as follows: vendor 1 vendor 2 quantity price/lb quantity price/lb 1-499 $17 1-399 $17.10 500-999 $16.75 400-799 $16.85 1000+ $16.50 800-1199 $16.60 1200+ $16.25 (a) what is the economic order quantity for each supplier? (b) what quantity should be ordered and which supplier should be used? (c) the total cost for the most economic order sire is $