Apycnocline is a boundary between changing regions of which of the following properties? what about a thermocline?
hint: what does the prefix thermo mean?

question options:

density, salinity

temperature, salinity

density, temperature

sound velocity, density

temperature, salinity

Explanation:

In oceanography, pycnocline is the layer of the water column where a rapid change in vertical density gradient occurs. This increase in density with increasing depth is generally more intense in low latitude regions, as at high latitudes the density has little variation with depth. The term pycnocline is analogous to the terms halocline (intense vertical salinity gradient) and thermocline (intense vertical temperature gradient). Generally the three features occur at the same depths, typically between 300 and 1000 m below the ocean surface. Pycnocline is the result of the combination of thermocline and halocline, as temperature and salinity influence the density of seawater. The relationship between these three factors (temperature, salinity and density) conditions the distribution of water bodies in the ocean.

sleep paralysis is a parasomnia, events associated with sleep.

sleep paralysis happens when you are in the middle of waking up or falling asleep. it is the feeling of being conscious but unable to move. it definitely involves hallucinations.

i had a friend that had sleep paralysis and he told me a story one time where he was laying in bed and he couldn't move his body no matter how hard he tried and there was someone standing in the corner of his room coming towards him. he couldn't move and you can't "wake up" because you are already conscious. sometimes sleep paralysis can be triggered by frequent waking up during the night based off of multiple trips to the bathroom, or if you had ever been abused, sleep paralysis can start happening from things like that.

it would be kevlar ^^