Cual de las siguientes opciones corresponde a la fuerza generada a partir del contacto de un cuerpo contra una superficie y que siempre es perpendicular a la superficie de apoyo.

The answer is b.the gaseous state is electrically positive, while the plasma state is electrically negative. 

What even is this. where is the question

Honestly "global warming" may be a slight possiblity, however they called it "climate change" because its not real, in fact we had one of our coldest days here not too long ago, and the "issues" with this subject is a blindfold for actual problems.