The Ediacaran fauna include representatives of the modern phyla ____

A)Proterozoa, Annelida, and Arthropoda
B)Annelida, Arthropoda, and Cnidaria
C)Proterozoa, Porifera, and Cnidaria
D)Coelenterata, Annelida, and Cnidaria
E)Coelenterata, Proterozoa, and Porifera


B

Environmental & Atmospheric Sciences

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Affluenza is a term coined by some social critics for the current drive to possess more and more stuff.

Answer the following statement true (T) or false (F)

Environmental & Atmospheric Sciences

In theory, what are free-market economies based upon?

a. The supply of products b. The consumption of products c. Pure competition d. Government policies

Environmental & Atmospheric Sciences

The international date line is located in Europe

Indicate whether the statement is true or false

Environmental & Atmospheric Sciences

Warming temperatures melt ice cover, exposing a darker surface that absorbs more solar radiation. In response, the air warms even further. This is an example of:

A) a positive feedback mechanism. B) a stable-feedback mechanism. C) a negative feedback mechanism. D) a variable-feedback mechanism.

Environmental & Atmospheric Sciences