B. Testicle, because it secretes hormones
Answer:
Biological
Explanation:
Major depressive disorder may be defined as a type of mood disorder in which the individual suffers from the long and intense feeling of sadness. This is also known as clinical depression.
The major depressive disorder can be run in the family as well. The biological factor plays an important role in these disorder. The factors like age, sex and other genetic factors are might responsible for the development of the condition of major depressive disorder.
Thus, the answer is biological.
4. Proteins. Proteins assist in repairing tissues and other issues in the body. I hope this helps.
Smell: to use your nose to sense objects or gas using the energy that is released into the atmosphere. Sometimes something smells familiar, so you perceive what it is.
Sentence: Once I walked in my house, the only thing I could smell was pizza.
