12. what's the critical error seen in the geocentric model of the solar system exhibited here? a. the moon is positioned too close to earth b. the sun is on the wrong sid of earth c. the sun is positioned to revolve around earth d. the sun is revolving in the wrong direction

Option C, the sun is positioned to revolve around Earth

Explanation:

Please see the attachment

Hello. You forgot to add the image. The image is attached below.

b. the sun is on the wrong sid of Earth

Explanation:

The geocentric model was born from a theory created by Claudio Ptolomeu. This model stated that the earth was positioned at the center of the solar system and that all the stars, planets and even the sun, revolved around it. In this theory the planets, the moon and the solorbitized the earth in the following order Moon, Mercury, Venus, Sun, Mars, Jupiter and Saturn.

According to this order we can say that the correct answer to your question is the letter B, since the image does not show any other celestial body on the side of the earth between it and the sun.

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many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.