A short paragraph of my composition. Thank you for your help!

( Your use of words,  phrases and sentence structure continue to impress )

Some potential suggestions:

and that is why there were a lot of literary and scientific giants in the past. Nevertheless, the giants we know were only a small group of people who had access to educational resources, which were extremely scarce in the past, and the genius to be versed in a certain area.  ( i don't understand this part )  

Average people couldn’t get the equal chance.

Average people didn't have the same opportunites.

Moreover, it is because currently more people are highly educated, and the scientists have to cooperate and delve more deeply into a subject in order to make new discovery discoveries that they, as an individuals are not as well-known as the giants were in the past, but they are all outstanding and contributory have contributed to the human race.

I haven't established a standard for the way to do the corrections..  I will improve and make it easier to understand.  This next part is me highlighting the parts that I really like

It might be argued that in the past people had less entertainment and therefore concentrated more on study, and that is why there were a lot of literary and scientific giants in the past. Nevertheless, the giants we know were only a small group of people who had access to educational resources, which were extremely scarce in the past, and the genius to be versed in a certain area. Average people couldn’t get the equal chance. Moreover, it is because currently more people are highly educated, and the scientists have to cooperate and delve more deeply into a subject in order to make new discovery that they, as an individual, are not as well-known as the giants were in the past, but they are all outstanding and contributory to the human race.

JT