original: It is probably a primitive body composed of carbonates.
simplifications: It is probably a simple body made of carbonates. It's likely a body made of carbon. It is very likely a undeveloped body made of carbonates. It is probably a primitive body made up of carbonates. It is probably a primitive body made of carbonates. It could be a primitive body composed of carbonates. It is probably an unsophisticated body made up of carbons. It is a primitive body made of carbonates. It is probably an old body made up of carbonates. It is probably a primitive body made up of carbonates.