Answer:
No attainable question.
Explanation:
I dont see the question here. The above statement is correct but, there is no defined question.
Answer:
2.carbon nanotubes for stain resistant clothes
Explanation:
The first land plants appeared around 470 million years ago, during the Ordovician period, when life was diversifying rapidly. They were non-vascular plants, like mosses and liverworts, that didn't have deep roots
