Primary succession occurs in an area that has:

1). Soil

2). Some soil

3). No soil

4). None of these

What determines whether a resource is considered renewable? * a. it can be produced inexpensively b. it is natural c. it is replaced at least as fast as it is used

Why are objects that fall near Earth's surface rarely in free fall?

A proposed explanation in evolutionary biology stating that species are generally stable over long periods of time. occasionally there are rapid changes that affect some species which can quickly result in a new species.

Which molecule has a central carbon atom with four different components around it?

All the offspring of a cross between a black-eyed mendelian and an orange-eyed mendelian have black eyes. what is the expected phenotypic ratio of a cross between two orange-eyed mendelian? a. 3 black-eyed:1 orange-eyed b.

Minerals that do not have weak bonds along specific planes will A. streak B. luster C. cleave D. fracture

In industrialized nations, childhood diseases have declined dramatically during the past half-century, largely as a result of

How does normal gene expression differ from epigenetic effects on the genome?

Why is a virus considered to be nonliving (info provided in text of reading) ?

Some clients are excessively responsive to either the primary or secondary effects of a drug. This is known as hypersensitivity, and it may result from a pathological or underlying condition.