The weathering of rocks provides , which cycles locally in both terrestrial and aquatic ecosystems.

I believe it is phosphorus

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)

the answer you are looking for is the united states forest service.

hope this !