What is the difference between primary and secondary succession?

The picture showed normal blood cells which are around and sickle cells which appear much longer people with sickle-cell suffer from the sickle cell anemia which is inherited diseaseit is caused by a change in gene responsible for production of hemo goblin this type of change is known as an

Every early childhood education program should develop a

In what ways does the study of human population differ from the study of wildlife ecology