In this exercise, you need to write down four problems of contamination. So, you could write:

1. *el efecto invernadero*
greenhouse effect

2. *no hay aire limpio*
there’s no clean air

3. *inundaciones*
floods

4. *disminuye la capa de ozono*
the ozone layer diminishes

Then, you need to write a five-sentence paragraph using those sentences, using the future tense, por and para. The topic is “Our planet in the year 2100”, so you could write:

*En el año 2100, el efecto invernadero será mucho mayor en nuestro planeta. Si no lo cuidamos, no habrá aire limpio para respirar. Habrá muchas más inundaciones por la erosión del suelo. Tenemos que evitar la contaminación del aire y del agua. Por la contaminación del aire, disminuirá la capa de ozono.*

In the year 2100, the greenhouse effect will be even bigger in our planet. If we don’t take care of it, there won’t be any clean air to breathe. There will be many more floods because of ground erosion. We have to avoid contamination of the air and the water. Because of air contamination, the ozone layer will diminish.

Finally, you need to evaluate your writing using the information in the table below.