What is the name of the blood vessels that carry blood from the heart to all the other parts of the body?

Witch type of microscope is used to view very small cell components like proteins and dna?

Which element forms the basis of all organic organisms a carbon b oxygen c hydrogen d nitrogen

Ronald wants to see if a new shower cleaner works better in removing soap than his old cleaner. he uses the new cleaner on one half of the shower tiles and his old cleaner on the other half. identify the independent and dependent variables in this experiment. enter your answer in the space provided.