Answer:
Your pineal gland. Its responsible for producing melatonin, a hormone that helps regulate sleep and wakefulness.
The tadpoles take their food from the yolk of an egg. The egg yolk is equivalent to the placenta. T<span>he </span>placenta <span>attaches itself to the uterus to provide the </span>developing<span> foetus with blood and oxygen.</span>
Answer:
Ineffective airway clearance
Explanation:Ineffective airway clearance is a medical term which means the ineffective or incomplete passage or clearing of the airway around the respiratory tract such as the lungs, nose etc.
If the respiratory tract contain some secretions or blockages it causes the body system to want to make attempts at clearing itself through Coughing etc.
