Sources of water pollution
The Great Lakes have been under threat for the last two centuries, but the situation is the far worse today. It use to be believed that dumping sewage or chemicals into rivers and lakes was a great way to dilute and disper

Life on Earth is not possible without carbon. Around 4 billion years ago, it was one of the most abundant chemical elements (others being oxygen, hydrogen, and nitrogen) when there was still no life. In times, carbon-based organic compounds were form

Acne is more prevalent among teens due to elevated hormonal changes which cause a rise in sebum production. However, many adults also have a problem with acne and battle daily in trying to keep it under control.