External barrier is any external palisade/domain that secures the internal contents or concepts either as concrete/discreet or abstract forms.
1.Physical external barriers mean barricades/fences from any internal domain.
2.Social external barrier means all socio-cultural elements that are confined within a community/society that prevents any external influence.
Other external barriers:
1.External Psychological barrier
2.External cognitive barriers
3.External Business economics/Finance barrier.
Skin
Skin cells.
The Great Barrier Reef poses no threat to any species. It is the species that already live within the waters of the Great Barrier Reef that are under threat from external sources.
language barrier poor infrastructure in some countries
external
Exactly in forward bias wen internal barrier potential is compensated by external voltage.,
The largest external organ in the human body is the skin. It serves as a protective barrier against harmful substances, regulates body temperature, and plays a role in sensation.
The cell part that contains the external boundary of the cell is the cell membrane. It acts as a barrier that separates the cell from its surroundings and regulates the passage of substances in and out of the cell.
The Great Barrier Reef is being threatened by urban development, agriculture, oil spills, and normal pollution. Infestation and disease have damaged it. Thousands of commercial vessels have damaged it.
To make a barrier between dirty hands and some external substance : which might be either more or less sterile.
The cell membrane acts as a barrier between a cell and its environment. This is composed of a phospholipid bilayer. The hydrophilic phosphate heads face outside and the hydrophobic lipid tails point towards each other in the centre of the membrane.
The cell structure that is located in the external boundaries of the cell is the cell membrane. The cell membrane is a semipermeable membrane composed of lipids and proteins that surrounds the cell, providing a barrier between the cell's interior and its external environment.