<em>global warming is caused by different gases ,, hence they are affecting the environment by increasing temperature ,, only science can solve such a big problem because during global warming all the reactions that take place are scientific..</em>
Answer:
Oxygen (O) , Carbon (C) , Hydrogen (H) , Calcium (Ca) , Iron (Fe) , Sodium (Na) , Iodine (I) , Magnesium (Mg) , Selenium (Se)
