Which is an example of secondary succession? a grapevine growing in an abandoned vineyard
ferns growing in a forest that has been logged
a pioneer species moving into an uninhabited area
lichens growing on cooled lava rock

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

Is there any solid scientific evidence that humans have been cloned?

What are some natural processes that represent physical and chemical changes?