Which Group's Members Had (Have)both Lungs and Gills During Their

question 41

Multiple Choice

Which group's members had (have) both lungs and gills during their adult lives?

• A)sharks, skates, and rays
• B)lungfishes
• C)lancelets
• D)amphibians
• E)ichthyosaurs and plesiosaurs

---

Definitions:

Rounded

The process of adjusting numbers to a specified degree of precision, often to make them simpler or more easily interpreted.

Mean

The mean of a collection of numbers, determined by summing up all the numbers and then dividing by the total number of numbers.

Median

The middle value in a list of numbers sorted in ascending or descending order, effectively separating the higher half from the lower half.

Quotient

The result obtained from dividing one number by another.