What are some of the biological features that humans have developed that the early mammals did not possess?

stridor can't collapse a lung.

the answer to your question is tooth decay.

bradykinin is a physiologically and pharmacologically active peptide of the kinin group of proteins, consisting of nine amino acids.

flooding wildfire landslides climate change the factors listed have an immediate effect on the animal populations found in any habitat. the four factors would lead to a death. b emigration. eliminate c immigration. d mutations.