the predominant pollutants include nitrogen oxides, particularly nitric oxide (NO) and nitrogen dioxide (NO2), and volatile organic compounds.
How do nerve<span> impulses </span>cause muscle<span> contraction? Skeletal </span>muscle<span> is under voluntary control. </span>Nerve<span> impulses that originate in the central </span>nervous system cause muscles to contract<span>. Both neurons and </span>muscle<span> tissue conduct electrical current by moving ions across cellular membranes. </span>
I believe a system that changes spontaneously without an enthalpy change becomes more disordered. Spontaneous reactions are driven by decreasing enthalpy and increasing enthalpy. A sponataneous reaction occurs without being driven by some outside force. Chemical reacrions are driven by two driving forces, namely, the enthalpy and the entropy.
You can tell that water is evaporating by measuring how much you have left in the container
If you star an experiment with 20ml of water and a few hours later there are 17ml you know 3ml of water evaporated
