Alcohol, nicotine, caffeine, drugs and viruses, such as rubella and listeria, can enter a fetus's blood from the mother's through the and possibly affect the fetus's growth and development.

Which organelles are labeled d, and what is one feature that distinguishes them from the other labeled organelles chloroplasts the only organelles that produce sugars from sunlight mosomes, only found in animal and bacterial cells centricles only found in animal cells mitochondra, the only energo-generating structures found in cells

Types of scientific inquiry that biologist engage in that cannot be completely controlled

Which zone within the open-ocean zone is home to the most organisms? deep zone surface zone intertidal zone transition zone