What is the function, stimuli, and location of a chemoreceptor? what is the function, stimuli, and location of a photoreceptor?

In the water cycle , when does water undergo a chemical change

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

Stephen is a student who wants to test his knowledge of medical terminology. which option could he use?