It is a mixture.
take salt water for example if you boil the water the salt will be left behind. salt water on its own is not a pure substance a pure substance would be just the water by its self.
hope that helps.
Answer:
Protection from UV radiation
The answer to this question would be reuptake
Reuptake is a reabsorption of the neurotransmitters that had been released. Reuptake is important because if the neurotransmitter isn't removed, they can repeatedly induce a signal.
Some drug works by inhibiting this reuptake mechanism like serotonin reuptake inhibitor. By doing this, the drug will increase the number of the neurotransmitter since it won't reabsorbed.
Answer:
D
Explanation:
80 percent chance I'm right
The added energy is need to break hydrogen bonds between water