What kind of charge would the hydrogen atoms have compared to the oxygen?

Hydrogen would have a negative charge compared to oxygen

Scince water molecules are polar. unequal sharing of electrons between the elements that make it. the hydrogen atoms would experience a slight partial pisitive charge as the electron density is more close to the oxygen atom making it partially negative

Organisms are more likely to be more preserved in mud than sand because mud is moist and wet, while sand is very dry.