I think it's the first and second option but I could be wrong because I don't know much about deserts :)
They are soluble. Often, they are of an appropriate polarity and size as well.
Answer: True.
Explanation:
Nitric oxide(N,O) is a signaling molecule produced by NO synthase which is a transmitter in the nervous system. In the central nervous system NO is generated by the activation of glutamate receptor. When it is produced, it diffuses out of the cells and act on neighbouring cells.
Answer:
When elements and compounds that are dissolved in water leave a solution, crystallization occurs. Minerals form in this way underground & in bodies of water.
Explanation: so either underground or water
