Carbon-12 is the most
common isotope of carbon.
it has 6 protons, 6 neutrons,
and 6 electrons. of its 6
electrons, 4 are valence
electrons. how many
covalent bonds can a carbon
atom form?

Which statement describe events that occur during interphase?

One function of the immune system is to attack the foreign cells to protect the body. in organ translate , the body recongnizes that the new organ is made of foreign cells. wha kind of medicine would you give a patient to increase the chances of transplate success

Which of the following happened during the precambrian era? the first prokaryotic cells the first eukaryotic cells development of photosynthesis all of the above