The type of fossil that is widespread over a large geographic range and a short geologic time frame is called

Index fossil is a type of fossil that is widespread over a large geographic range or area but in a short geologic time frame. Index fossil are usually used in determining the geological periods because of its short time frame, wide geological spread in area, and its rapid evolution.

b. 20: 5

explanation:

20% of the worlds population lives in southwest asia, and less than 5% of the world's

land area.