Compared to the huge force that attracts an iron tack to a strong magnet, the force that the tack exerts on the magnet is

A) relatively small.
B) equally huge.
C) not enough information given


B

Environmental & Atmospheric Sciences

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Volcanoes that have the most impact on global climate seem to be those rich in:

a. nitrogen b. water vapor c. carbon dioxide d. sulfur e. oxygen

Environmental & Atmospheric Sciences

What is the main difference between plastics with a #2 vs, #4? 

A. both are polyethylene but have different densities B. both are polystyrene and used in packaging C. both are polypropylene and easy to recycle. 

Environmental & Atmospheric Sciences

________ is the mineral least susceptible to chemical attack on the Earth's surface.

A. Halite B. Feldspar C. Quartz D. Olivine E. Calcite

Environmental & Atmospheric Sciences

What is a residue?

A) An amino acid which has been severed from a protein. B) Any individual amino acid in a protein or polypeptide. C) The portion of a protein which remains after one amino acid has been removed from the C-terminus. D) The portion of a protein which remains after one amino acid has been removed from the N-terminus.

Environmental & Atmospheric Sciences