Answer:
a. The Decimal System
Explanation:
The Decimal System, is one of the great mathematical innovation form ancient India. There is no clear date and place about the invention the decimal system.
It was first recorded in India, then spread to Islamic world, and further to Europe. Decimal system gave a unique turn to the world of mathematics and made the counting or measurement easy.
Hence, the correct answer is "a. The Decimal System".
Answer:
Late evening and early morning
Explanation:
The best time for viewing the northern lights is "Late evening and early morning."
This is because according to various scientific research and observation the best time of the day to view the northern lights is around 9.30 pm to 1 am.
Also, it is believed that the best time of the year to view this natural phenomenon is around December to March of the following year.
The answer is Tranquilizer.
Nembutal is a barbiturate which is a sedative, barbiturates are non-selective central nervous system depressants. It is lethal in high doses. A tranquilizer/sedative is a sleeping pill but are also used as an anti-anxiety drug as they have calming effects on patients, however taken in high doses can result in accidental/purposeful death.
Answer:
Los meridianos y paralelos son conceptos geográficos que consisten en líneas imaginarias que se utilizan para orientarse en la superficie de un planeta, como por ejemplo la Tierra.
