Which part of the respiratory system is the spongy organ that takes in air through the trachea?

sexual reproduction produces offspring with novel combinations of genes. species that reproduce sexually must maintain two different types of individuals, males and females, which can limit the ability to colonize new habitats as both sexes must be present.

colors do exist. the color of the sky is actually violet; humans percieve the color of the sky as blue.

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