You see a fossil in a museum. it appears to be raised and shows the shape of a living organism. this type of fossil is most likely a cast fossil mold fossil trace fossil petrified fossil

Advances in technology have enabled scientists and researchers to better study the evolutionary relationships between species

The phylogenetic tree illustrates the relationship between humans and our closest living relatives. the tree was based on biochemical comparisons, including dna and amino acid sequences. according to the biomolecular data, we could infer that

What substance acts to prevent sudden ph changes in bodily fluids?