Explain why neuromuscular junctions consist of a chemical synapse instead of an electrical one. what would be the problem if they were electrical?

In the body, two types of the synapses occur, chemical and the electrical. The chemical synapses are the most common type of synapse. The chemical synapse works by the release of chemicals from presynaptic neuron and the binding of the chemical messenger to the receptors of the post synaptic neuron.

The binding of the neuron may result in different effects in the post synaptic neuron, it may be inhibitory or excitatory, depending on the messenger. Hence, the chemical synapse provides a variety of signals. In case of electric synapse, the signals will always excite the post neuron, which may not be required sometimes. Hence, the electrical signals will not provide the inhibition of the post synaptic neuron.

answer: ice crystals in air

the water from the water body or another source of water gets evaporated as water vapor as an effect of heat on water. these water vapor rises in the upper layers of the earth atmosphere under high atmospheric pressure. the atmospheric pressure of these water molecules starts to decrease due to the effect of cold air. the invisible water vapor condenses into visible water droplets and ice crystals.these ice crystals and water droplets being less denser than the surrounding air floats on air as clouds.

well, i believe that the answer is 2. : 3