moving toward a higher point or position

not clearly stated

ability to understand

a shared boundary between two persons or systems through which information is communicated.

A duty that you are give to do (especially in the armed forces)

to move or turn around a central point

a lake, usually artificial, where water is collected and stored for the use of a community or industry

to show the relationship between two items or events.

an animal that feeds itself by killing and eating other animals

happening regularly, but not frequently