Choose all that apply. Three common characteristics of hunter-gatherer societies were .

smaller-sized communities
age and gender divisions
little knowledge of plants and animals
moving around a lot
no understanding of tools and fire

Which system revise and send electrical signals throughout the body

Isolated volcanic peaks on the ocean floor are

The scales shown in the introduction measure mass, or the amount of matter in a particular object. the scientific law of conservation of mass states that matter cannot be created or destroyed during a chemical reaction, but it can change from one form to another. did the simulation support this scientific law? explain why or why not.