Of course, if the dose is too high, intoxication results. The trick is to find the right stimulant and the correct dose. So, doctors treat ADHD by prescribing various candidate drugs, noting results and adjusting dosage until a patient shows the desired improvement. When a child is out of control in the classroom, a very destructive cycle of disapproval and rebellion ensues.
Plastic and synthetic materials are the most common types of debris in our oceans and are having horrific impacts on marine wildlife and systems. As an island continent girt by sea marine debris is of particular importance for Australia.
The Great Pacific Garbage Patch is a massive dump of floating garbage in the Pacific Ocean. We contribute to it everyday by littering and using un-biodegradable materials. Our trash is taken downstream from rivers into the ocean, where currents sweep it to the closest patch.