Answer:
Vitamin-D in the blank.
Explanation:
If you think you may have a deficiency, it's important that you speak to your doctor and get your blood levels measured. Fortunately, a vitamin D deficiency is usually easy to fix. You can either increase your sun exposure, eat more vitamin-D-rich foods, such as fatty fish or fortified dairy products.
Answer:
Plasma. The liquid component of blood is called plasma, a mixture of water, sugar, fat, protein, and salts.
Explanation:
D is the answer because carbondioxide and oxygen are both needed for plants or green plants to survive.
I hope it helped
Pthere are many factors it could be cholesterol, fat Etc...