The action of separating something into parts or the process of being separated.

“I slept like a log.”

Having or showing intelligence, especially of a high level.

Showing or feeling slight anger; annoyed.

All the populations of organisms belonging to different species and sharing the same geographical area

Obtain from (a number) another that contains the first number a specified number of times.

“She cried a river of tears.”

A person who freely offers to take part in an enterprise or undertake a task.

Sad or displeased because someone or something has failed to fulfill one's hopes or expectations.

An organism that feeds on other organisms for food

A printed or written problem or exercise designed to illustrate a rule.

“I have a million things to do today”

Practical contact with and observation of facts or events

Not giving sufficient attention or thought to avoiding harm or errors.

An integrated unit of a biological community, its physical environment, and interactions

A means of solving a problem or dealing with a difficult situation.

“Time marches on”

A written or verbal request inviting someone to go somewhere or to do something.

Easily agitated or alarmed; tending to be anxious; highly strung.

The interconnected feeding relationships in a food chain found in a particular place and time

A figure composed of lines that is used to illustrate a definition or statement or to aid in the proof of a proposition.

“from forth the fatal loins of these two foes.”

Any of the world's main continuous expanses of land (Africa, Antarctica, Asia, Australia, Europe, North America, South America).

Unable to concentrate because one's mind is preoccupied.

Any alteration of the natural environment producing a condition harmful to living organisms; may occur naturally or as a result of human activities