As succession progresses, animal species diversity increases due to the fact - * O less soil is created O food choices increase O precipitate rates stabilize O temperature moderate

one characteristic that is shared by all is a soft body. many

of these invertebrate animals also have an outer shell to protect their

body. oysters, clams, snails, and mussels are all mollusks. so are octopuses, squids, and slugs. mollusks live on land and in freshwater.

cell division is not regulated in tumor cells.

synapse nervous system

friedrich meischer discovered it in white blood cell