20 points!! Which of statements about the skateboarder's energy is true? As he travels from the top of the ramp to the bottom, KE turns into PE.

As he travels from the bottom of the pipe to the top, KE turns into PE.

The PE is the greatest at the bottom of the ramp.

Chen's research team randomly assigned some newborns and their mothers either to a breastfeeding promotion group (where breastfeeding was encouraged, but not required) or to a normal pediatric care group (where breastfeeding was neither encouraged nor discouraged). which research method did they use?

What nitrogenous bases are found in rna

Which of the following statements about imprisonment rates in the united states is true? the united states imprisons people at a higher rate than russia, mexico, or canada. the united states imprisons people at a lower rate than russia or south africa, but higher than israel. the united states imprisons people at a lower rate than russia, mexico, or canada. russia, south africa, and mexico each imprison more people than the united states.