a reduction in the ozone layer a reduction in photosynthesis an increase in radioactive wastes an increase in the greenhouse effect
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Which of these is most likely an effect of releasing carbon dioxide pollution into the atmosphere?
Possibilities:
- a reduction in the ozone layer
- a reduction in photosynthesis
- an increase in radioactive wastes
- an increase in the greenhouse effect

an increase in the greenhouse effect