Human population-historical overview, Biology

Assignment Help:

Human Population-Historical Overview

Throughout history, the human population has been quite small. It has grown relatively slowly and even experienced occasional declines. Figure shows the general trend of population growth in the last half million years. As said earlier, the dawn of agriculture, triggered a series of major global environmental changes.

2068_Human Population-Historical Overview.png

Figure: Human Population

As agriculture became more efficient, women began to bear more children and the human population increased. It was possible to grow more food in a given area of land. Hunter-gatherers were mostly nomadic and in their way of life, infants were a liability as children could not become very good hunters. Whereas, in a stationary agricultural society, babies are not much trouble and children can help in the farm. Therefore, the population increase between 10,000 BC and about 1800 AD was largely the result of increasing birth rates that coincided with the growth of agriculture.


Related Discussions:- Human population-historical overview

What is an example of a hypothesis, What is an example of a hypothesis whic...

What is an example of a hypothesis which may explain why there is not a big representation of the class Reptilia found in polar regions? Beings of the class Reptilia are abunda

Explain the metabolic rate of aerobic organisms, Why can the consumption of...

Why can the consumption of molecular oxygen indicate the metabolic rate of aerobic organisms? Molecular oxygen (O2) consumption has direct relation to the cell metabolic rate i

Ram ventilation, Ram Ventilation Some fish do not use pumping action f...

Ram Ventilation Some fish do not use pumping action for gill ventilation. It has been known for long that large tunas cannot be kept alive in captivity unless they are put in

Explain personal risk factors in cad, Explain Personal Risk Factors in CAD?...

Explain Personal Risk Factors in CAD? The personal risk factors are the factors that are specific and characteristic for a particular individual and are non-modifiable in natur

What are the main cellular features of fungi, What are the main cellular fe...

What are the main cellular features of fungi? There are unicellular and pluricellular fungi. All fungi are eukaryotes and heterotrophs. Fungi have cells with cell wall made

Ecology, importance of pyramid of energy to the ecologist

importance of pyramid of energy to the ecologist

Tissue synthesis for wound healing in nutritional care, Explain the Tissue ...

Explain the Tissue Synthesis for Wound Healing in Nutritional Care? Tissue proteins are synthesized only by amino acids brought to the tissues by circulating blood. The necessa

Explain prophylaxis with antimicrobial, Explain Prophylaxis with antimicrob...

Explain Prophylaxis with antimicrobial Prophylaxis with antimicrobials has decreased the incidence of surgical site infection after head and neck operations that involve an inc

Strobilation - types of asexual reproduction, Strobilation - Types of Asexu...

Strobilation - Types of Asexual Reproduction Strobilation is a type of asexual reproduction in which successive segments are separated off from the body one after other. It is

Describe effects on the urinary system, Describe the effects on the urinary...

Describe the effects on the urinary system of drinking too much beer.

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd