Sympatric Speciation
mountain range
A closed door constitutes a physical barrier to the movement of air; an open door permits the movement of air.
Radiant Barrier is essentially insulation that can be found anywhere where regular insulation is installed. Radiant barrier is foil and can often be seen covering duct work.
A sonic boom occurs when something breaks the sound barrier.
Diffraction occurs when waves bend around the edge of a barrier.
Physical/Mechanical barrier
Language can be both a physical and mental barrier. Physically, differences in language can hinder communication between individuals. Mentally, language can influence how we perceive and interpret the world, which can lead to misunderstandings or miscommunication.
a physical barrier is something that stops u from emigrating 4 example large bodies of water etc.
A population that becomes divided (isolated) by a physical barrier, allowing each of the separated groups an independent evolutionary path.
physical
BARRIER - a blocking or physical interposition (e.g. "moisture barrier""Great Barrier Reef")
An intact epidermis constitutes a physical barrier.
a monster
it is a chemical barrier because it produces tears that are chemicals. also- for your information, skin is a physical barrier along with the nose and mucus and cilia. sebum and stomach acid are chemical. :D
There are many types of barriers of communication for example; language barrier, physical barrier, emotional barrier, listening barrier, cultural barrier, gender barrier etc
mountain range
NO