What element is different from others in that it readily bonds with other atoms? Is a backbone? Can form many shapes... has 4 electrons in outer energy level? Plz help ASAP!!!

Which experiment would most likely contain experimental bias

Which of these is true for bacteria because they are prokaryotic cells? a. they can engulf body cells in order to make memory cells. b. they must invade viruses in order to reproduce. c. they are much larger than eukaryotic body cells. d. they can reproduce on their own outside of other cells.

Vessels draining the myocardium of the heart, open primarily ,into which chamber?