Tim's cow is anemic. The cow is lacking which type of nutrient?

What came first egg or chicken? and is tomato a vegetable or a fruit?

Identify the missing parts of the carbon cycle

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