What Is the World's Population as of 2019

question 61

Multiple Choice

What is the world's population as of 2019?

• A)About 5.7 billion
• B)About 7 billion
• C)About 7.7 billion
• D)About 9 billion

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Definitions:

V1a Receptors

A specific type of receptor in the brain that binds to vasopressin, a hormone involved in social behavior, stress response, and the regulation of water retention.

Avpr1a Gene

A gene associated with social behavior, particularly in the regulation of pair bonding and social recognition in vertebrates.

V1a Receptors

A type of receptor in the brain that binds vasopressin, influencing social behaviors, memory, and temperature regulation.

Prediction

The act of making an educated guess about the future based on current information or trends.