Answer: The circulatory and digestive systems
The statement saying, "<span>A demonstration speech typically revolves around a process or sequence of events</span>." is true. As the name suggests, a demonstration speech aims to inform the audience primarily through demonstrating the steps involved in accomplishing a certain task. It is then necessary that the process is done chronologically and in detail.
C it contains only yellow and blue
Latex balloons is the answer.
Human influence ecosystem by chopping down forests,and cars burning off greenhouse gases.Humans can effect the ecosystem in a negative way ,by pollution, waste dumping, over hunting of animals,over fishing,industrial gases,energy use and not using