A Tipler cylinder, also called a Tipler time machine, is a hypothetical object theorized to be a potential mode of time travel—although results have shown that a Tipler cylinder could only allow time travel if its length were infinite or with the existence of negative energy.
active participation of people means participation of people to give voted during elections. It is important for a country as this would bring new and efficient leaders to improve a country's development.
I believe the answer is: <span>organism, ecosystem, biosphere
Organism refers to one single living being. Ecosystem refers to the collection of different types organisms that interacted with the environment around them, and the Biosphere includes all ecosystem, whole atmosphere , and hydrosphere of the earth.</span>
Answer:they followed a route blaze by fur traders, Wich took them West along the Platte river through the Rocky mountains VIA the easy South pass in Wyoming and then Northwest to the Columbia River. It later became known as the Oregon trail.
