Answer:
Calculate the speed of a wave that has a wavelength of 8 meters and a frequency of 16 meters per second (m/s).
Answer: I read the text and it seems perfect and I think you don't need to add anything else.
Explanation:
Analyzing the task and the way you responded it seems to me that you did it well. You were precise in each of the years. I think you should not add more since it would be a bit more extensive and the important thing about this task is to point out the most important events of each year. In my opinion, I wouldn't change anything, I think it's very good.
I could also see that you used the connectors that the statement showed. You have followed the instructions very well. Congratulations!
Roberto should exit the website as fast as possible because that is a scam.
I hope this helps :)