Answer:
C. Fossils of the winged dinosaur Archaeopteryx show that it had modified scales that produced feathers.
Organic compound, butane Encycopadia Britannica, Inc. Any of a large class of chemical compounds in which one or more atoms of carbon are covalently linked to atoms of other elements, most commonly hydrogen, oxygen, or nitrogen. So the answer would be B.) Sample A contains carbon, hydrogen, and oxygen. I hope this helps.
The study of microorganisms is called microbiology
It could be from an ancestor other genes from older family members
History of life documented by fossils
