Partial or complete loss of hearing can be caused by damage to the; I, II, and III, that is, the axons of the neurons associated with each hair cell that carry information to the brain, hair cells in the cochlea and also the tympanic membrane. Hearing impairment, deafness or hearing loss is the inability to hear things, either totally or partially. This may be caused by injury or diseases that damages the parts responsible for hearing process.
A DNA molecule consists of two strands of nucleotides twisted together to form a double helix. The sugar-phosphate backbone is found on the outside of this helix and the bases are found braching towards the middle. Hydrogen bonds join the thenitrogenous bases and hold the two strands together.
Therefore your answer is sugar and phosphate.
Pituitary gland: Responsible for growth and reproduction, it secretes and stores hormones and influences how other glands act.
Adrenal gland: It’s responsible for producing certain steroid hormones, including aldosterone and cortisol.
It's a vague description of the two.
Due to a reduction in blood volume due to blood donation, the stroke volume will decrease. However, to compensate for this, your heart rate will increase so as to maintain your cardiac output. Cardiac output is stroke volume multiplied with heart rate.
Maintaining normal cardiac output is critical so the whole body receives enough nutrients and oxygen.