This process is known as a involuntary reflex.
B a very large molecule made of smaller molecules
I believe it is a. Birds typically migrate in the wintertime to escape harsher climates to places that have more food. Also, some birds migrate to certain places when they are about to start their nesting and breeding seasons.
The LEFT VENTRICLE of the heart supplies oxygenated blood to the aorta.
Aorta is the main artery that supplies oxygenated blood from the heart to other organs and tissues (except lungs, lungs are for gas exchange instead) so that they get enough oxygen and nutrients.
Meanwhile, the heart has 4 chambers, left and right atrium, and left and right ventricles. Atrium are for receiving blood from different vessels, and ventricles are for pumping blood out of the heart.
Since only the left ventricle is connected to the aorta, so, the answer should be left ventricle.
Reference picture by amac training.
The correct answer is B. Recharge.
Water recharge is the movement of water from land surface to the water table as a result of rain fall over large areas and also through the movement of water from surface water bodies to the ground water system and is less uniform. Ground water recharge can be done naturally through the water cycle and human-induced.