How Is It Possible for Scientists to Know How Much

question 28

Multiple Choice

How is it possible for scientists to know how much carbon dioxide is assimilated by the oceans?

• A) Scientists actually do not know how much carbon dioxide is assimilated by the oceans. There are only crude estimates based off of models.
• B) Scientists use ice cores to estimate how much carbon dioxide is assimilated by the oceans.
• C) Scientists track this by using carbon in decayed and fossilized organisms from the deep sea.
• D) Scientists can estimate how much carbon dioxide is assimilated by oceans with moderate precision because radioactive carbon dioxide from nuclear bombs can be tracked.

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Definitions:

Type O

A blood group in the ABO system characterized by the absence of A and B antigens on red cells and the presence of anti-A and anti-B antibodies in the plasma.

Universal Recipient

An individual with Type AB positive blood, who in theory can receive blood of any type in transfusions due to the absence of anti-A or anti-B antibodies.

Type AB

A blood group in the ABO blood type system characterized by the presence of both A and B antigens on the surface of red blood cells.

Indirect Approach

A communication method where the main point is presented after providing background or supporting information.