Why is the dorsal side of a frog green with spots?

Compare and contrast the adaptations of free-living flatworms and parasitic flatworms

Are these strong bases, neutral, strong acids, weak acids or weak base household bleach (ph=12.6) fluid in a car's battery (ph of less than 1.0) milk (ph=6.7) stomach contents (ph=2.2) pure water (ph=7)

What is the name for a substance formed in a chemical reaction