Antonie van leeuwenhoek first observed which of the following? brain cells red blood cells viruses bacteria

How do nicotine and tobacco cause cancer? by decreasing blood-sugar levels by damaging or changing a cell's dna by increasing heart rate by increasing phlegm and mucous production

What creates an electric force field that moves electrons through a circuit? a. energy sourceb. loadc. metal wiresd. resistance

Which safe and legal options do teen parents have if they think they are not ready to be parents? check all that apply. leave the baby in front of someone's door. surrender the baby under their state's safe-haven laws. place the baby for adoption. release custody to the baby's grandparents. give the baby to a stranger.