Answer:
supply ships.................................................
100,000 BCE to 600 BCE belongs to the ancient era according to the new time periodization of events. The Ancient Era is the time when the foundations of the history of the world was built. Long centuries in this era was called prehistory, that is between 100,000-4,000 BCE. It was remembered that during this era, the stone age people survived their day to day living by hunting and searching and gathering for food. They also slept in caves. Eventually, as history progresses, in the 600 BCE, the people started to learn agriculture and opted for permanent living.
On a quiet spring morning, a resounding “Slap!” reverberates through the air above a remote stream leading to Lake Yellowstone. Over much of the past century, it has been a rarely heard noise in the soundscape that is Yellowstone National Park, but today is growing more common-the sound of a beaver slapping its tail on the water as a warning to other beavers.
When the grey wolf was reintroduced into the Greater Yellowstone Ecosystem in 1995, there was only one beaver colony in the park, said Doug Smith, a wildlife biologist in charge of the Yellowstone Wolf Project.
Today, the park is home to nine beaver colonies, with the promise of more to come, as the reintroduction of wolves continues to astonish biologists with a ripple of direct and indirect consequences throughout the ecosystem.
A flourishing beaver population is just one of those consequences, said Smith.
"Concealment" can be an antonym for "Exposition"
Answer:
A bench grinder, I hope that helps :)