Give a talk about the nature. Remember to say: What nature

All countries have their own nature. It can be very different. But Id like to tell you about Russian nature.Russia is a big country. There are a lot of regions. In Russia there are a lot of forests, seas, lakes and mountains.People get the oxygen from forests. Also there are a lot of minerals in Russia. So we produce oil.But we have some ecological problems. I think the most serious are: air pollution and the greenhouse effect.In conclusion Id like to say that people should protect the nature.