Answer:D
Explanation: Because it has the least amount of density in it. All the others are heavier, meaning they will sink. Just like if you drop a rock water and a feather, the feather will float.
Density def:
Density, mass of a unit volume of a material substance. ... Density offers a convenient means of obtaining the mass of a body from its volume or vice versa; the mass is equal to the volume multiplied by the density (M = Vd), while the volume is equal to the mass divided by the density (V = M/d).
People in everyday language use theory as a guess and estimation
Scientists use scientific method and do all sorts of experiments to prove their theory
Glucose sugar is produced during photosynthesis and is used in cellular respiration. When used in cellular respiration glucose sugar is combined with oxygen to produce Carbon Dioxide (Co2), water (H2o), and energy in the form of ATP
Build several models of his tree house out of different materials, and see which model holds up best to wind, water, and ice.
