Skin is the main barrier between internal organs and the outside environment. the outer layer of skin is composed mostly of epithelial cells. which is a characteristic of epithelial cells that makes them ideal for providing this type of protection? the cells are packed tightly together. the cells are surrounded by a lot of extracellular matrix. the cells are separated by synapses. the cells are organized into a mesh structure.

Marcella is a four-year-old girl who is a victim of emotional child abuse. based on the child and family services improvement and innovation act of 2011, which action should the government take for marcella? a. the state should arrest marcella’s abuser. b. the state should find a home for marcella as soon as possible. c. the state should enforce stricter laws in the area where marcella resides. d. the state should provide medical assistance to marcella.

The mantle is made up of which structural zones?

Which sentences describe point source pollution? in this type of pollution, the source of the pollution is single and easily identifiable. when runoff water from the melting of snow mixes with debris, it creates pollution. the runoff water, mixed with pollutants, reaches large areas with disastrous effects. alternatively, when a wastewater treatment plant releases harmful chemicals into a stream, the chemicals pollute the stream water because they are not treated for safety.