Once the "threshold" for an action potential is reached what is the sequence of events that occur? 1. potassium channels are activated and potassium ions move out of the neuron. 2. sodium channels are activated and sodium ions move into the neuron. 3. the interior of the neuron becomes more negatively charged than the exterior. 4. the interior of the neuron becomes more positively charged than the exterior.

What type of electromagnetic wave are microwaves and radar

The images show the wings of a bat and a bee. from this evidence, what can you conclude about the evolutionary relationship between these organisms? a. the wing structures of the bat and the bee are different, indicating they didn’t inherit wings from a common ancestor. b. the wing structures of the bat and the bee are different, indicating they inherited wings from a common ancestor. c. the functions of bat wings and bee wings are the same, indicating they obtained wings from a common ancestor. d. the functions of bat wings and bee wings are different, indicating they didn’t obtain wings from a common ancestor.

9. wind power creates pollution. water air soil noise