What are some of the challenges of using or harnessing solar energy?

the father in the first generation probably had the recessive colorblind trait in his x chromosome. if he and his wife both had the colorblind trait, even if she had 1 recessive and 1 dominant, then that trait would be passed on to their kids.

(since you didn't attach the family tree this is just an assumption)

1. efficient use of space

2. elimination of groundwater contamination

3. energy generation

4. lower carbon footprint