When will exposure to a potentially harmful substance be most likely to damage many organs in a developing embryo

What is the role of fadh2 in cellular respiration

Explain nonnuclear inheritance. ~ ap biology

There are specialized producers that live in warm water vents deep in the ocean. these producers do not per-form from photosynthesis, but instead perform a similar process with iron and other chemicals. why do you think these producers use this process instead of photosynthesis?