The surplus food that agricultural systems could generate allowed for people to live in larger, more permanent villages. Villages were more productive not only agriculturally but creatively.

How did hunter-gatherer societies secure their food supply? They moved from place to place in search of plants and animals for food. How could hunter-gatherers make use of a stone with a jagged edge? They could cut wood, crack nuts, or dig up roots.

The Neolithic Revolution references a change from a largely nomadic hunter-gatherer way of life to a more settled, agrarian-based one, with the inception of the domestication of various plant and animal species—depending on species locally available and likely also influenced by local culture.

History paints us a detailed picture of how society, technology, and government worked way back when so that we can better understand how it works now. It also helps us determine how to approach the future, as it allows us to learn from our past mistakes (and triumphs) as a society.

Answer: It is important to keep a record of the event s of the past because it helps us in future.

While recorded history begins with the invention of writing, over time new ways of recording history have come along with the advancement of technology. History can now be recorded through photography, audio recordings, and video recordings.

Scorpion I’s Tomb Hieroglyphs The hieroglyphs date to between 3400 – 3200 BCE and are the oldest recorded history discovered so far in the world. The hieroglyphs were found in Tomb U-j, which is believed to hold the remains of Scorpion I, one of the first rulers of Ancient Egypt.

The span of recorded history is roughly 5,000 years, beginning with the Sumerian cuneiform script, with the oldest coherent texts from about 2600 BC. Ancient history covers all continents inhabited by humans in the period 3000 BC – AD 500.

Primary sources provide raw information and first-hand evidence. A secondary source describes, interprets, or synthesizes primary sources. Primary sources are more credible as evidence, but good research uses both primary and secondary sources.

Secondary Source The purpose of secondary sources is to interpret, or explain the meaning of the information in primary sources. Secondary sources help you to understand more about a person’s life as well as how and why an historical event happened.

So what is the difference between Primary and Secondary Wastewater Treatment?

There are two basic stages in the treat- ment of wastes, primary and secondary, which are outlined here. In the primary stage, solids are allowed to settle and removed from wastewater. The secondary stage uses biological processes to further purify wastewater. Sometimes, these stages are combined into one operation.

There are three main stages of the wastewater treatment process, aptly known as primary, secondary and tertiary water treatment.