Who has a better chance of restoring nature, ancient man or modern man?

There is no single answer to this question.
At the moment, scientific progress has stepped far forward.
Scientists have learned to cross many plants with each other, have developed varieties that are resistant to frost and drought, but this did not solve the problem of restoring nature.
The population of the planet in ancient times was small and nature managed to recover itself.
There were no factories that threw tons of heavy metals into the air and poisoned the water.
Therefore, in order to restore nature in our time, a person must limit himself to some benefits and focus on saving the planet.