Here are some of the more common reasons your urine's odor may change: 1  Medications or supplements. 2  Certain genetic conditions, such as Maple Syrup Urine Disease, which causes urine to smell sickeningly sweet. 3  Certain foods â most notably asparagus.  Urinary tract infections.
The study of one type of evidence of evolution is called embryology, the study of embryos. An embryo is an unborn (or unhatched) animal or human young in its earliest phases.Embryos of many different kinds of animals: mammals, birds, reptiles, fish, etc. look very similar and it is often difficult to tell them apart. Many traits of one type of animal appear in the embryo of another type of animal.For example, fish embryos and human embryos both have gill slits. In fish they develop into gills, but in humans they disappear before birth.any traits of one type of animal appear in the embryo of another type of animal. For example, fish embryos and human embryos both have gill slits. In fish they develop into gills, but in humans they disappear before birth.
Early homininsâparticularly the australopithecines, whose brains and anatomy are in many ways more similar to ancestral non-human apesâare less often referred to as human than hominins of the genus Homo.o two humans â not even monozygotic twins â are genetically identical. Genes and environment influence human biological variation from visible characteristics to physiology to disease susceptibly to mental abilities. The exact influence of genes and environment on certain traits is not well understood.