The model above shows a cell moving a substance into the cell using a protein to facilitate the transport. Which substance is most likely being transported through the membrane with this method?
A)
Glucose
B)
Oxygen gas
Nitrogen gas
D)
Carbon dioxide gas

Astudent visits the beach during a very hot day she steps on the santa and jumps because it is so hot what type of heat transfer is demonstrated by the sand in this example

How does buring fossil fuels impact does carbon cycle? what large impact does this have on the envirnment?

Which best describes the nucleus of an atom a. it is where all of the particle s of the atom are located b. it is the negatively charged part of the atom c. it is where the electrons and the protons are located d. it is the part of the atom with the greatest mass