Is this multiple choice?????
Carbon dioxide moves out of the tissues (cells) into the bloodstream to be exhaled in internal respiration.
Answer:
The four main classes of organic compounds (carbohydrates, lipids, proteins, and nucleic acids) that are essential to the proper functioning of all living things are known as polymers or macromolecules. All of these compounds are built primarily of carbon, hydrogen, and oxygen but in different ratios.
Explanation:
Positive ions from a base and negative ions from an acid form a it helps for example ypu have positive ions right well take my smart advice well the positive ions and the negative ions they combine together to make sulphour