Answer:
a is the best answer I think
Traditions i would say
hope this helps
brainlyist pls <span />
Answer:
The average person spent significantly less years in school than a hundred years ago. In the year 1900, an adult had an average of 8.7 years of schooling. The average American, aged 25 or older, has completed 13.5 years of education.
Explanation:
<span>Phosphorus moves in a cycle through rocks, water, soil and sediments and organisms.</span>
Mesopotamia is important because it is the first river valley civilization. ... Mesopotamia is significant for two reasons, one: It is the first civilization, and two: many important inventions and innovations were first introduced in the city states of Mesopotamia.
Writing, math, medicine, libraries, road networks, domesticated animals, spiked wheels, the zodiac, astronomy, looms, plows, the legal system, and even beer making and counting in 60s (kinda handy when telling time). These are just a few of the concepts and ideas invented in Mesopotamia that are used today.