Which of the following is LEAST characteristic of a complex organism?
A) cephalization
B)symbiotic relationship
C)bilateral symmetry
D) specialized tissues and organs
***Pls help would be much appreciated (50points)***

The cluster of developing cells from conception until birth is called an

How are proteins and nucleic acids related? they both provide energy. they both carry genetic information. the structure of proteins is determined by nucleic acids. the subunits of nucleic acids are also the subunits of proteins.

Ascientist is conducting an investigation that involves water, silver, carbon dioxide, and oxygen gas which group of statements best describes all of the materials he is using in the investigation?