Which of the following devices uses an outside energy source to transfer thermal energy from a cool area to a warm area? a. generator b. refrigerator c. battery d. electroscope

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