A coffeehouse charges a flat rate, r, for each hour a customer wants to use the Internet. Enter an equation to express the total cost, c, to use the Internet at the coffeehouse for t hours

The chart below matches messenger rna codons with amino acids. a dna strand has the sequence of bases, aat. according to the chart, the corresponding messenger rna codes for which amino acid?

Which best describes standard precautions?

Certain gases in air are important natural resources that are used in welding. two of these gases are a. oxygen and argon b. hydrogen and fluorine c. chlorine and sulfur dioxide d. nitrogen and carbon dioxide