C.all mammal descended from a common ancestor.
Answer:
I would say B.By choosing cows that are high milk producers
this is just my guess tho
C. pressure decreases and volume increases
Carbon is the sixth most abundant element in the planet. Without carbon, life will be non-existent. It provides the framework for all living organisms on Earth. A carbon atom is composed of six protons and six neutrons. Carbon is found in almost everything that surrounds us; they are in fuels, coals, natural gas, even the proteins that make-up hair and meat contain carbon. This is mainly because carbon atoms can bond to other carbon atoms to make a compound. It is naturally found in the environment and its abundance fits its purpose in our existence. <span>A Carbon atoms can bond to other carbon atoms.</span>
