Why Did the 2009 U

question 35

Multiple Choice

Why did the 2009 U.S. population continue to grow even though the United States had essentially established a zero population growth?

• A)emigration
• B)immigration
• C)better sanitation
• D)baby boomer reproduction
• E)the 2007-2009 economic recession

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Definitions:

NMDA Receptors

Protein complexes in the nervous system that play a key role in synaptic plasticity and memory formation by acting as a receptor for glutamate, an important neurotransmitter.

Postsynaptic

Referring to the region of a neuron that receives and responds to neurotransmitters released from another neuron at a synapse.

AMPA Receptors

Ionotropic receptors in the brain that mediate fast synaptic transmission in the central nervous system, crucial for brain functions such as learning and memory.

Nerve Growth Factor

A protein essential for the growth and survival of certain neurons, playing a critical role in the development and maintenance of the nervous system.