0 Negative effects of the global warming phenomenon and how to overcome global warming July 27, 2014 by Heba Soffar · Published July 27, 2014 · Last modified August 30, 2019
0 The states of matter (solid, liquid, gas, plasma) March 17, 2015 by Heba Soffar · Published March 17, 2015 · Last modified November 16, 2019
2 The adaptation in the aquatic submerged plants October 31, 2014 by Heba Soffar · Published October 31, 2014 · Last modified August 28, 2019
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