Botulinum toxin is a blocking agent preventing the release of certain neurotransmitters, specifically Acetylcholine, from the endings of the motor nerves (#Kennedy, 2002 and (#Kent, 1998). Botulinum toxin has a light chain and a heavy chain, each of which contributes to the toxicity.
Making the world better, one answer at a time. The geography of Greece is very mountainous with many valleys around them making it hard for other city states to come and attack them. The geography of Greece is very mountainous with many valleys around them making it hard for other city states to come and attack them.
The Hellenic Republic of Greece is rich with history, tradition, and archeological sites dating back thousands of years to classical ancient Greece. With an area of 131,940 square kilometers (50,942 square miles) and a coastline of 13,676 kilometers (8,498 miles), Greece is a land of mountains and sea.