Embryo
they are lethal and cause spontaneous abortion of the embryo early in development.
the Thumb. so you could one day hold an iphone or blackberry. or i guess tools if you want to be technical Fire was the major importance for the early humans because it allowed them to solve many problems, like keeping themselves warm, provided light, and protected them form animals.
The Big Bang theory deals with large-scale aspects, and with the early development of the Universe. The creation of life on Earth, and perhaps on other planets, is not part of the Big Bang theory.
digestive and nervous
Nomads were a group of early humans who moved with the seasons.
weell
it was ugly
The era in which early humans made tools is called the Stone Age.
An organism in the early stages of its development is an embryo.
Early (anciant) Greek called humans mortals
Walking upright
The era in which early humans made tools is called the Paleolithic Era.
An organism in the early stages of its development is an embryo.
The development of humans that walk upright and opposable thumbs. It helped scientists classify us as modern humans.
embryology
embryology
embryo