Browsing Through a Seed Catalog,you Are Tempted to Order Several

question 5

Multiple Choice

Browsing through a seed catalog,you are tempted to order several beautiful floral varieties,but worry that you will spend too much on your garden every year.Which plants should you buy?

• A)herbaceous perennials,which will come back year after year
• B)woody perennials,which require little space and few resources
• C)annuals,which will come back year after year
• D)biennials,which will last twenty years before they die

---

Definitions:

Known Minerals

Refers to substances with a definite chemical composition and crystalline structure that have been identified and cataloged by scientists.

Silicon Tetrahedron

A fundamental structural unit in silicate minerals, consisting of four oxygen atoms symmetrically arranged around a central silicon atom.

Cleavage

The tendency of a mineral to break along flat, smooth surfaces, which is related to the mineral’s crystal structure.

Silicate Minerals

Minerals that contain silicon and oxygen, and usually one or more additional elements, making up the largest and most important class of rock-forming minerals.