constituting result found by dividing total amount. number expressing the central or typical value in a set of data. To add numbers then divide by the number of items.

Hard; not easy; you need to work hard to do it.

constituting number two in sequence. Units of time; one sixtieth of a minute. formally support or endorse as necessary preliminary to adoption.

achieved or maintained by careful and deliberate effort. To focus on learning something usually at school.

having acquired much knowledge through study. To get knowledge or skills by study or experience.

Narrow opening which things can go through. subject microorganisms or cells to passage.

set of railway vehicles forming train. be composed of.

To prepare for use.

Very much or often; to a large degree.

any of more or less distinct parts into which something is or may be divided or from which it is made up. To divide something into smaller parts.

Coming from, found in, or facing towards the west. film, television drama, or novel about cowboys in western North America.

warm-blooded vertebrate animal of class that is distinguished by possession of hair or fur, females that secrete milk for nourishment of young. Animals which drink milk from its mother.

Many of. more than two but not many. More than two but not a large amount.

group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding. Subsections of a genus (of plants, animals).

perceive intended meaning of.