The layer of solid ground that makes up all of earth’s continents is called a. the lithosphere b. the biosphere c. the atmosphere d. the hydrosphere

The response is the basis for vaccination. primary secondary tertiary none of the above

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

Darwin’s hypothesis about how life changes over time is now called?