Given an example of a structure that is present in human embryos, but has disappeared by birth.

Human embryo have gills and tail but by the time of birth both of this disappears.

Explanation:

Explanation:

1. Embryos of many different animals, like mammals, birds, fish, etc. they look very similar to each other in starting in the embryo stage.

2. In starting, recognizing them as of different animal is very difficult.

4. There are some similar characters which are found in various species, For example, fish and human embryos both have gill slits. In case of fish, gill slits develop into gills when fish get mature, and in case of humans they disappear before birth.

Gills, tail in human disappear as the embryo grows.

check for the pregnancy rating of drug. if its class c or d see if other alternatives