Author Question: The number of dead zones has ________ every decade from the1960s into the twenty-first century. ... (Read 34 times)

Alygatorr01285 · **on:** Aug 22, 2018

The number of dead zones has ________ every decade from the1960s into the twenty-first century.

A) doubled
B) tripled
C) quadrupled
D) quintupled
E) increased ten-fold

Question 2

In deep-water waves the water depth is greater than the ________ divided by two.

A) wave base
B) wave height
C) wave period
D) wave steepness
E) wavelength