The ancient Sumerians modified their environment to increase food production by<span> digging irrigation canals which was a very big part of European development. </span>
Most important agent of chemical weathering is WATER.
vegetation.
topography.
climate.
Hemisphere comes from the latin word hemi, which means half. So, hemisphere denotes a half of a sphere. <span>Any circle drawn around the </span>Earth<span> divides it into two equal halves called </span>hemisphere<span>s. </span>
A half of the earth, usually as divided into northern and southern halves by the equator, or into western and eastern halves by an imaginary line passing through the poles
Answer: The brightness of our if betelgeuse were to explode as as a supernova would by getting the ratio betelgeuse to sirius. Which would then be:
Apparent brightness of Betelgeuse
÷ Apparent brightness of Sirius=
6.9×10^4 Lsun.
