The most economic activities were agriculture.
Answer:
The crust and outer part of the mantle.
Explanation:
The crust and outer part of the mantle are the two top-most layers of Earth. The lithosphere is comprised of these two. Here's a picture for an example.
Here are the two to remember as we ponder these three questions: Logos – the logical appeal (the content of the argument). — This speaks to the “What do you want me to know?” question. Pathos – the emotional appeal (this has a lot to do with engaging with the audience.
The answer is C. Natural sources are limited. People tend to get their resources from the environment in order to live and survive. Because of the increasing number of human population, resources become scarce and there is not enough supply for consumption in the near future.