Native Americans have been hunterers and gatherers up to the period when growing crops became available to them/when they discovered growing crops is a thing that could be done. The reason for this is that when you've started growing crops, you can safely stay on one spot and have a sufficient supply of food for a longer time period - this wasn't available before. However, even with the coming of agriculture, the still hunted and gathered as it was an important aspect of their life.
Is the practical implementation of a State, other than its military units, that enforces law and order.
I believe the answer is: d. <span>Baillargeon eliminated the need for a child to have the motor skills necessary to display object permanence and focused instead on the patterns of their gazes
Development of object permanence would enhance the children's process in examining the environment around them. This would accelerate their understanding on their existence within the environment and the scope of things that they're able to do to their surrounding.</span>
Gravity, Gas, Nitrogen, Carbon Dioxide, and Many Gases.
Asterioids
iron
nickel