Oil shale<span> is a type of </span>sedimentary rock<span> that is rich in kerogen. </span>Kerogen<span> is a part of rock that breaks down and releases hydrocarbons when heated. </span>Hydrocarbon<span>s are substances made entirely of hydrogen and carbon. </span>Petroleum<span> and </span>natural gas<span> are probably the most familiar hydrocarbons. The hydrocarbons in oil shale can be used as an alternative to petroleum or natural gas.</span>
A) Ha crecido rápidamente en los último siglo.
Answer:
Sexual Division of Labor is the gender stratification (inequalities between men and woman) that men go after difficult, risky food to hunt meanwhile woman just gather easy items like fruit, fish, etc.
<u>The three hypothesis about the Indus script:</u>
Indus script include the symbols which were used by the people during the Indus valley civilization. There were three hypothesis related to this script which were
- Dravidian hypothesis which is the most suitable one for this script.
- Sanskrit hypothesis which was given by an Indian archaeologist named Shikaripua who was responsible for interpreting this language.
- Miscellaneous hypothesis which included a number of hypothesis related to Indus script where most important was Indo-Aryan language.
<span>Romans
Phoenicians
Muslim Arabs</span>
