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Sergio [31]
2 years ago
11

Name two substances that can be obtained by evaporation ​

Biology
1 answer:
makkiz [27]2 years ago
6 0

Answer:

silicon dioxide Si02 and diamond

Explanation:

because it's commonly found in nature

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Give two reasonsthat may account for the continuous firing of a<br> PostsynapticNeuron.
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1.Continuous diffusion of negatively charged ions into the postsynaptic neurons , <u>which  leads to continuous reversal of charges (hyperpolarization) and therefore continuous firing of action potential</u>

2. Inhibition of hydrolytic enzymes e.g (acetycholinesterase)   that  metabolize activities of  cholinergic   neurotransmitters  e,g acetycholine at post synaptic cleft. leading to firing of action potential.

Explanation:

Neuron whose dendrites  transmits action potential to the  neuromuscular junction is called presynaptic neuron. While  neuron that  transmit action potential away from the neuronal synaptic junction, or from the neuromuscular  junction to the cell body of adjacent neuron or to effectors (gland and muscles) are called  post synaptic  neuron.

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