1. Use a detailed illustration as well as a DETAILED description of how light is produced by the electrons of an atom. Please be neat with your illustration.

This line graph compares the growth of plants that were kept in the sun for different amounts of time.a)  on day 7, the plants kept in the sun for 3 hours were how tall? b)  on day 7, the plants kept in the sun for 6 hours were how tall? c)    on day 10, the plants kept in the sun for 9 hours were how tall? d)  on day 11, the plant that was grown with 1 hour of sunlight was how tall? e)  based on the graph, the plant grows best in what amount of sunlight?

The answer for #3 is c but i don't know why

Air can be considered a mixture. which statement does not explain why?