QUE NO TE COJA DE SORPRESA. Here we GO!

MAÑANA EN CLASE DE BIO

ENGLISH LECTURES.

The human respiratory system.
Today we begin the human respiratory system. This course instead of one lecture per week we are going to develope one unit. The whole one in English.

In order to think about the topics of this lecture. I would like to share with you some questions.
It is what we do every new topic.
However, today Claire is going to speak about diferent things and you have to write down the question about she is talking about.




1º. The respiratory System allows us to breathe. It brings oxygen into our bodies and send carbon dioxide out. This exchange of oxygen and carbon dioxide is called respiration. In the same time our cells need Oxygen to obtain energy. It comes from several processes very hard to define... It is called also cellular respiration. 

2º. Mainly it is think Oxigen is the more extensive gas in the air. But it is not true. The air we breathe is mainly plenty of Nitrogen

3º And about breathe out... The thing is I would think nitrogen would be the most extensive due its percentage in the air is about 78%. however it is carbon dioxide

4º Not to much but if I think about my years in the high school It would be nose...