For Most of History the Total Human Population Was Under

question 52

Multiple Choice

For most of history the total human population was under __________.

• A)1 million
• B)10 million
• C)100 million
• D)1 billion

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Definitions:

Input Shaft

The part of a machinery or system that takes in power or material for processing, commonly found in engines and transmissions.

Transmission Lube Level

The optimal amount of lubricant within a transmission system, crucial for smooth operation and preventing wear.

Overdrive Ratio

A gear ratio in which the output speed of a transmission is higher than the input speed, resulting in lower engine RPM and improved fuel efficiency at high speeds.