According to the geological time scale, in what era did most types of animals first appear?
-haden
-paleozoic
-mesozoic
-cenozoic

Susan arnold is a 62 year old woman who has developed rheumatoid arthritis and is beginning to develop significant joint damage

On a floor there are several 1-4 mm elongated drops leading away from a body lying in a pool of blood. the the forward wall there is a sigzag pattern and on the walls to the right side there is a linear patter

In what layer of the sun is energy transfers between atoms