C) Eutrophication is the answer
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Answer:
Check if the rock layer has fossils in it.
Explanation:
The rock layer from the inside out and the fossils will tell you how old the rock is.
The doctor uses an EEG or also known as
Electroencephalography, this is used to record the activity of the brain,
electrically. This will help the doctor make a proper diagnosis of Ronald even
if he’s sleeping and to view what type of disorder he has with the given
results.
They cannot move freely but they can vibrate
I am not sure if its going to be right or wrong but I would pick either C or A