The city of Los Angeles released 96 million "shade balls" into the Los Angeles Reservoir. These will serve to shield the water from the sun's heat in order to reduce evaporation and prevent algal and bacterial growth so no toxic substances are produced in the water. The balls reduce evaporation by 85%-90% so will save a lot of water yearly.
A slum is a squalid and overcrowded urban street or district inhabited by very poor people.
"B. <span>African culture is extremely diverse; there are over 3,000 different culture groups, and over 800 languages are spoken" since the estimated number of language is actually over 1000. </span>
Rock art? It's probably not the best answer, but apart from tools and weapons, it was the only thing I could think of.
<u>Answer</u>:
Ethnic Composition of various groups have led to a varying diversified landscape but not limited to, architecture, traditions, food, art, and music
<u>Reason</u>:
Certain group of people who share their common history dialect, society and culture belong to the same ethnic group and they are often regarded a one common nation. They most often share a common heritage history, a origin myth and a common language and they are diversified by land groups but they are not limited to food, music, arts and architecture. Each ethnic group has their different types of food habits, have a variety of music and their architecture is also not limited
