Scientists hypothesize that early in Earth's history, inorganic gases in the atmosphere could have reacted with one another to form amine other simple organic compounds. Is this hypothesis supported by evidence?
A. Yes. The Miller-Urey experiment and similar experiments show that these reactions might have occurred.
B. No. Scientists have tried, but failed, to re-create the chemical reactions that would have needed to occur.

C. Yes. Scientists have observed similar chemical reactions occurring in the atmospheres of Mars, Venus, and other planets.
D. No. Scientists have not observed these reactions occurring in the atmosphere of Earth or another planet.

Explanation:

C. Yes. Scientists have observed similar chemical reactions occurring in the atmospheres of Mars, Venus, and other planets.

the correct answer is option b

behavioral response need communication and thus co-ordination at several levels such as interaction among cells, organ system and the entire organism.

behavioral response produces both internal and environmental stimulus.

identify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.identify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.v