Which statement is true?
a. venus shows evidence of recent volcanic and tectonic activity.
b. venus is the only planet that has water in all three of its states.
c. venus has the greatest temperature extremes of any planet.

it would be volcanic activity. since there is no water available on the surface and the high pressure and temperature it would be volcanic activity. and mercury has the most extreme temperature.

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small, big, or no change could occur in the phenotype. it could cause something as simple as a cats ears to curl backwards or something as frighting as death. it could also occur in the protien-coding area and have an effect on that but no effect on the amino acids. what has to occur is a changing in the hox gene or the control gene.