Increased brain size allowed Homo sapiens to become more successful hunters than the early humans that came before.
The term homo sapiens refers to the only extant human species. The name is Latin for "wise man" and was introduced in 1758 by Carl Linnaeus.
Brain size in both Neanderthals and Anaromically Modern Human (homo sapiens) is significantly larger on average than brain size in H. erectus. Neanderthal and AMH brain sizes are in the same range.
Answer:
The steps prevented soil from washing away and made it easier to irrigate crops.
The steps increased the amount of land that farmers could grow crops on.
Explanation:
Terrace farming primary benefit is to reduce the speed of run off water which leads usually lead to erosion therefore conserving land and water.
It is method of farming carried out in mountainous region,where the sloppy nature of the mountain and the effects of acceleration due to gravity(g),increases the velocity of rain water washing the top soil on the mountain,removing the top soil and therefore washing away the nutrients as wastes.
To reduce the rate of velocity,terraces are built on the slope of the mountain,therefore protecting the topmost soil layer from been washed away by erosion,thus the soil fertility is conserved, and crops could be grown on the terrace. Therefore by allowing the use of sloppy land area of the mountain for farming ,terrace farming increases the land that the farmers could used for crops propagation.This would have been impossible without the creation of the terraces.
In addition, since the grassed water ways are not needed for water supply there is maximum land area available for farming.
<span>The first striking change occurs with the appearance of new weapons. A machine gun was designed that used the recoil to operate the mechanism of the weapon in a continuous manner. The Parabellum-Pistole (Pistol Parabellum), is a semiautomatic pistol operated by recoil. There were three types of general-purpose pistols: revolvers, automatic pistols, and semiautomatic pistols. The rifle, became the most crucial infantry weapon, of the battlefields. The gases made their appearance sowing horror in the trenches, and the tank was undoubtedly one of the great novelties of the Great War.</span>
The Qin dynasty built the Great Wall of China
