old man. People who lived in times long past.

A letter of recommendation, e.g. for a job. provide book or article with citations of sources of information.

Distance in pitch between two notes.

From the beginning of something until the end. in every part of.

done with full awareness of likely consequences. To make an educated guess about something.

having slow, regular rhythm. To determine the value or importance of something.

Being easily noticeable.

worthy of attention.

action of rotating around axis or center. Movement in a circle around a central point.

fitting with person's needs.

Being sympathetic. When you get the meaning correctly; comprehension. To know the meaning of language, what someone says.

person who watches or notices. People whose job it is to watch or notice things.

constituting result found by dividing total amount. number expressing the central or typical value in a set of data. amount to or achieve as average rate or amount over period of time.

To show or describe something in a particular way.

material thing. Some things you can see or touch, but is not alive. To disagree; to protest against an idea or plan.