Hi Mr. Wood how are you doing I hope you are having a wonderful time in Africa. I was just wondering what is tussock ? I hope you have fun on Mt. kilimanjaro. But be careful because your the best sience teacher in the world and I certainly dont want you to fall into hot molten lava. I also hope you see a few cool animals such as lion's, cheeta's, elephant's, giraph's, rino's and much much more. I've been really really close to a lion before because I went to a zoo and a mom and dad lion were behind thick glass and I was like 2 inches away from them.