Show the result of the following sequence of instructions: union(1,2)

Microbiology: An Introduction 11
Using the following information, create a dichotomous key for distinguishing these unicellular organisms. Which cause human disease?

Myers' Psychology for AP 2
A test-developer defines uniform testing procedures and meaningful scores by comparison with the performance of a pretested group. Which of the following best describes this process? a. Reliability testing b. Validation c. Content validation d. Standardization e. Predictive validity

Campbell Biology: Concepts & Connections 7
A glucose molecule is to starch as (Explain your answer.) a. a steroid is to a lipid. b. a protein is to an amino acid. c. a nucleic acid is to a polypeptide. d. a nucleotide is to a nucleic acid. e. an amino acid is to a nucleic acid.

Principles of Economics 2
Table 3.8 shows information on the demand and supply for bicycles, where the quantities of bicycles are measured in thousands. a. What is the quantity demanded and the quantity supplied at a price of $210? b. At what price is the quantity supplied equal to 48,000? c. Graph the demand and sup

Concepts of Biology 1
An isotope of sodium (Na) has a mass number of 22. How many neutrons does it have? a. 11 b. 12 c. 22 d. 44

General Chemistry. Principles and Modern Applications 11
When an iron object rusts, its mass increases. When a match burns, its mass decreases. Do these observations violate the law of conservation of mass? Explain.

Advanced Engineering Mathematics 10
Find the trigonometric polynomial F(x) of the form (2) for which the square error with respect to the given f(x) on the interval \(-\pi<x<\pi\) is minimum. Compute the minimum value for \(N=1,2, \cdots, 5\) (or also for larger values if you have a CAS). \(f(x)=|x| \quad(-\pi<x<\pi)\)

Chemistry for today : general, organic, and biochemistry 9
Classify the following elements as representative, transition, inner-transition, or noble gases: a. iron b. element 15 c. U d. xenon e. tin