From the carbonaceous chondrites, we follow the trail to the most primitive materials.
Experts can mold a pleasant form out of even primitive material.
Because it is composed of primitive carbonaceous materials, it has a very dark surface.
Perhaps to an earlier era where they had to adapt primitive materials?
The most primitive composite materials were straw and mud in the form of bricks for building construction.
More recently, he and others have been searching for a simple series of steps that can explain how primitive genetic material replicated itself.
It gave us few problems at sea, or no more than any ship made of inadequate and primitive materials.
She wasn't sure how long such primitive material was supposed to last, but she had the impression it needed refurbishing frequently.
"Van Gogh did that with the most primitive materials and equipment."
It is made of a primitive material, almost unchanged since the beginning of the solar system 4.5 billion years ago.
