When you develop an application using a three-tiered architecture, the classes in the middle layer are typically

What characteristic of long period comets suggest they come directly from the oort cloud?

The "instance" relationship shows that something is an object of a

Which of these options are the correct sequence of actions for content to be copied and pasted? select content, click the copy button, click the paste button, and move the insertion point to where the content needs to be inserted. click the copy button, select the content, move the insertion point to where the content needs to be inserted, and click the paste button. select the content, click the copy button, move the insertion point to where the content needs to be inserted, and click the paste button. select the content, move the insertion point to where the content needs to be inserted, click the copy button, and click the paste button.