If steel is more dense than lake water, why can a boat float?

The average density of the boat, including the steel and air, is less dense than 1.00 g/cm³.
The average density of the boat, including the steel and air, is more dense than 1.00 g/cm³.
Lake water is more dense than pure water.
Steel has a special ability to float regardless of density

Why is the structure of molecule important to its function?

The characteristics of two different types of reactions are shown below: reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of an element. which statement is true about the atoms of the elements that participate in the two reactions? their identity changes in both reaction a and reaction b. their identity changes in reaction a but not in reaction b. their identity changes in reaction b but not in reaction a. their identity remains the same in both reaction a and reaction b.

Which of these is an example of pseudoscience? a) predicting the time of sunrise based on data on position of earth b) predicting the date of the moon phases based on data on position of earth c) predicting eclipses based on the position of the sun and the moon d) predicting future events in a person's life based on the position of the moon