Please, Could you carrect and improve this sentence? Thank you.

we were shown by the video pros and cons,
On the one hand, the benefits are huge, not only do trees remoil quimicals from soil or filter out toxins but them also can be natural sponges prevents their roots floods and water runoff and their porous leaves take away carbon and pollutians from the value air. Whereby them help with the causes global warming. Hence, remarkable we ought to be aware of this advantges and be willing to make change in our cities implanting law for this purpose

‘The video showed us pros and cons. On the one hand, there are a lot of benefits: not only do trees remove chemicals from soil, filtering out toxins - they also act as natural sponges, their roots preventing floods by soaking up water runoff, and their leaves remove carbon dioxide and other pollutants from valuable air, helping to combat global warming. Therefore, we should be aware of this, and be willing to drive change in our cities through campaigning for laws that nurture this purpose.’

Since you said ‘pros and cons’, are you going to talk about the negative parts after this?