What Ultimately Limits the Height of a Sand Dune

question 4

Multiple Choice

What ultimately limits the height of a sand dune?

• A)the amount of sand it contains
• B)saltation
• C)wind speed
• D)air temperature

---

Definitions:

Graduation

The process of receiving or conferring an academic degree or the ceremony that is sometimes associated, where students become graduates.

Invest

The act of allocating resources, usually money, in the expectation of generating an income or profit.

Promise

A declaration or assurance that one will do a particular thing or that guarantees that a particular thing will happen.

Deposit Today

The action of placing money into a financial account or investment with the expectation of receiving future returns.