1. Water PollutionPresented By: Dr. Md. Salequr Rahman Dep. Of Community Medicine 2. What is water? Water is made of tiny molecules of hydrogen and oxygen.Each one is so…

Slide 1Class Reptilia Class Amphibia Slide 2 CHORDATA Latin term for chord http://universe-review.ca/R10-33-anatomy.htm#amphibians Slide 3 Chordata- Urochordata, Cephlachordata,…

Slide 1pH Slide 2 What is pH? pH is a measure of the acidity, [H + ], or basicity (alkalinity), [OH - ], of a solution. The scale is typically measured from 0 to 14. A pH…

1. “ The mission of the Austin Green Energy Group is to enhance our community and protect our environment through activities that preserve and conserve our natural resources…

1. Water Cycle The water evaporates from the rivers, seas, lakes and forms clouds.When the temperature decreases the water vapor becomes liquid and rain occurs.Water returns…