CPM Refers To

question 109

Multiple Choice

CPM refers to:

• A) ad rates quoted in cost per thousand impressions.
• B) the number of users who clicked an ad divided by the number of times the ad was delivered.
• C) the maximum amount of money an advertiser is willing to pay for each click on their ad.
• D) the cost an advertiser is willing to pay for a particular amount of time a surfer spends on an ad.
• E) a method of charging for advertising whenever a user performs a specified action such as signing up for a service, requesting material, or making a purchase.

---

Definitions:

Reproductive Isolation

A set of mechanisms that prevent individuals of different species or populations from interbreeding and producing fertile offspring.

Microbial Species

A group of microorganisms, such as bacteria, archaea, fungi, and protists, that share similar genetic characteristics and are distinct from other groups.

Horizontal Gene Transfer

The swapping of genetic material in single or multiple-celled organisms through mechanisms that bypass the "vertical" passing down of DNA from ancestor to descendant.

Phylogenetic Species Concept

A concept in biology that defines a species based on the smallest group of individuals that share a common ancestor, representing one branch on the tree of life.