_____forms mainly from shells of the amoeba-like foraminifera; small, drifting molluscs called pteropods; and tiny algae known as coccolithophores.

Seawater’s density increases with _____. 

_____ sediments are minerals that have precipitated out of water.

True or False? log2 5 = log16 625

A teacher offers ten possible assignments for extra credit in a course but requires students to choose them, without looking, from a hat. Six assignments involve library research and four are computer programming exercises. Suppose that a student chooses two assignments, one after the other, at random without replacement. What is the probability that at least one of the assignments is a computer programming exercise?

How do acids and bases react to a hydrogen ion in solution? 

Let X= {a, b, c} and Y= {u, v}. Which of the following arrow diagrams define functions from X to Y ?

_____ currents are the slow, deep currents that affect the vast bulk of seawater beneath the pycnocline. 

What weather event caused much of the major damage to the Gulf Coast during Hurricane Katrina?

What is the term used to describe the total quantity (or concentration) of dissolved inorganic solids in water?