Most people in cities get their water . a. by supplying it themselves b. by delivery through pipes c. through private suppliers d. all of the above

In natural selection, what is actually “selected? ” a) alleles are directly selected b) genotypes are directly selected c) phenotypes are directly selected d) entire populations are directly selected

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

This is a scaffolding of protein fibers that us sell keep it shape in a cell division and cell movement