Respuesta :
Answer:
Blank 1: fossil fuels
Blank 2: smog
Blank 3: acid rain
Explanation:
The burning of fossil fuels causes dangerous gases to enter the atmosphere.
Heavy, dense fog caused by dangerous gases mixing in the atmosphere is called smog.
Acid rain occurs when dangerous gases mix in the atmosphere and fall back to the surface in liquid form.
The fill in the blanks should be filled with fossil fuels, smog, and the acid rain
What is fossil fuels, smog, and the acid rain?
At the time when the fossil fuels should be burned so it released the nitrogen oxides that should be converted into the atmosphere that contributed to the creation of the smog and the acid rain.
Here the most common nitrogen that should be related compounds that should be emitted into the air via the human activities that should be called as the nitrogen oxides.
learn more about gases here: https://brainly.com/question/25878231