Who were the incas and what technology did they have

Toward the end of the roman empire, what caused a decrease in the use of coined money tell me now

For 50 pointsfredrika's science teacher asked her to bring in three abiotic items from her backyard ecosystem. which of the following groups of items should she bring? a. a lightning bug, a plug of grass, and a wormb. a smooth rock, some red dirt, and an empty bird's nestc. a ladybug, a spider, and some water from a mud puddled. a caterpillar, a pine cone, and a piece of a robin's egg

What are the most populous and least areas of russia and why are some areas more heavily populated than others