Answer:emf blackout (electro magnetic field) ,is a shielding technique that helps protects a person from harmful radiation of light,it makes someone sleep comfortably and peacefully
Explanation:
The Agrarian Era is one of the most important points in the human history and development. In this era, the humans changed their lifestyle from nomadic to settled one because they were able to produce surplus of food. This resulted in great and rapid development and progress of the human societies. As the humans had much more spare time, they started to occupy themselves with lot of other things, such as science, arts, building, resulting in an explosion of inventions and advancements in a very short period of time, and the process was constantly accelerating and the human kind was moving forward quicker and quicker.
Egypt was referred to as gift of the Nile.
Answer:
Examples of a secondary source are: Publications such as textbooks, magazine articles, book reviews, commentaries, encyclopedias, almanacs.
If gender is an answer choice then it should be the correct answer.. Hope it helps
