Astrocytes play a critical role in normal function of the mammalian nervous system. Astrocytes regulate synaptic transmission and plasticity, protect neurons against toxic compounds, and support metabolically to ensure their optimal functioning.
Self intrest and exchanging things for mutual benefit
Answer:
Poor infrastructure that results in services that fall short of being adequate.
Famine often caused by bad crops or unfavorable weather conditions.
Lack of adequate medical care.
High levels of long-term unemployment.
Extreme poverty and lack of socio-economic upward mobility.
Between the 1820s and 1850, as more white males won the right to vote and political parties became more organized, the character of American democracy changed. It became more partisan and more raucous, a turn that bred ambivalence and even discontent with politics and the dominant parties.
