B
Explanation
Sodium Fluoride
The mineral most frequently found in both ii quartz
Minimal viable population, it's the least population an ecosystem can have of a species and not go through catastrophic events.
Answer:E) Voltage-gated calcium channels open
F) Calcium enters the synaptic knob
G) Synaptic vesicles merge with synaptic knob plasma membrane
H) Neurotransmitter is released by exocytosis
B) Neurotransmitter attaches to receptors on a muscle, neuron, or gland cell
I) Action potential reaches synaptic knob
Explanation: