Osmosis would happen when the semipermeable membrane separating two parts would be permeable to desired the solute. It is a process of passing through solute molecules through a membrane with concentration gradient as the main driving force.
The human body is made up of trillions of cells. Cells of the nervous system, called nerve cells or neurons, are specialized to carry "messages" through an electrochemical process. The human brain has approximately 100 billion neurons.
3. chemical signals!
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B. False, because there are two type of species tobacco the Nicotania Rustica and the other one is Nicotania Tabacum.