Which would be the most useful step for chloe to develop the photosynthesis model further

What is the answer for the complicated molecules that make up living things usually contain carbon. why is carbon so important in these molecules?

How does natural selection change thephenotypes within a population over time?

Which best describes the nucleus of an atom a. it is where all of the particle s of the atom are located b. it is the negatively charged part of the atom c. it is where the electrons and the protons are located d. it is the part of the atom with the greatest mass