If intelligent extraterrestrials visited earth 475 million years ago, and then again 300 million years ago (at the close of the carboniferous period), what trends would they have noticed in earth's terrestrial vegetation over this period?

Jasmine, at 33 months of age, is able to engage in some self-care behaviors but still has trouble with tasks such as putting on socks. a few months later, she accomplishes this same task relatively easily. the change in abilities is most likely due to