What is the similarity between simple diffusion and facilitated diffusion?
both move molecules from lower concentration to higher concentration.
both move molecules from higher concentration to lower concentration.
both need energy.
both need transport protein.

Could someone me with number one you

The double bond between a carbon atom and two oxygen atoms (a molecule of carbon dioxide) has two characteristics. what are they? a. an ionic bond is formed between the oxygen and carbon atoms. b. four valence electrons are shared. c. two valence electrons are shared. d. valence electrons are shared between oxygen atoms.

Aresident is five feet tall. what is the measurements in iches