The Human Population Doubled from 1 to 2 Billion Between

question 98

Multiple Choice

The human population doubled from 1 to 2 billion between 1800 and 1930.What led to this increase in population?

• A)government-controlled farming
• B)globalization and shared resources
• C)medical advances that eliminated many diseases
• D)people had more children

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Definitions:

Serotonin

A neurotransmitter that is involved in many functions in the body, including mood regulation, digestion, and sleep.

Cognitive Psychology

The field of psychology focused on examining cognitive functions such as thinking, perception, memory, and learning.

Mental Imagery

The representation of sensory information in the mind in the absence of direct input, akin to "seeing" with the mind's eye.

Dependent Variable

In an experiment, the variable that is being tested and measured, which is expected to change as a result of manipulations to the independent variable.