Proof read my spanish speech , tell me how to phrase things better and if everything makes sense.

Hola, me llamo Brainz y voy a hablar de los problemas medioambientales. Me preocupan la pobreza y la deforestación, que especialmente en Perú, es un problema importante.

Es esencial que compremos productos ecológicos para evitar el consumo de sustancias perjudiciales. Creo que no es justo que haya tanta contaminación. ¡Es terrible!

Hasta hace dos años he usado bolsas de plástico, que dejé de usar cuando supe que no son biodegradables y perjudican a la naturaleza porque tardan en desaparecer sus residuos muchos años.

Yo estudio geografía desde hace seis meses y me gustaría mejorar mi ciudad, ya que hay demasiada polución que contamina los ríos y finalmente termina en el mar.

A escala local, recomiendo no tirar basura al suelo, porque ya hay demasiada basura en las calles.

A escala global, los gobiernos no deben producir tantos desechos químicos y deben fomentar el uso de energías renovables.

Hello, my name is Brainz and I am going to talk about environmental problems. I worry about poverty and deforestation, which especially in Peru, is a major problem.

It is essential that we buy organic products to avoid the consumption of harmful substances. I think it's not fair that there is so much pollution. It's terrible!

Until two years ago I used plastic bags, which I stopped using when I learned that they are not biodegradable and harm nature because they take many years to disappear.

I have been studying geography for six months and I would like to improve my city, since there is too much pollution that pollutes the rivers and finally ends up in the sea.

On a local scale, I recommend not to throw garbage on the ground, because there is already too much garbage in the streets.

On a global scale, the governments should not produce so many chemical waste and should encourage the use of renewable energy.

answer might be "si", would be better if you added answer choices