The pulmonary veins transport oxygenated blood back to the heart from the lungs, while the pulmonary arteries move deoxygenated blood from the heart to the lungs.)
Endometriosis
This occurs when the tissue that lines the womb called endometrium proliferates to other regions outside the uterus. The displaced endometrium is still subject to reproductive hormonal changes such as thickening and breakdown as it occurs in the womb. This causes complications with painful symptoms.
A hormone is a regulatory molecule that is secreted into the blood by an endocrine gland
Answer Explanation:
Due to technical difficulties, the answer and explanation for this problem are available in the attached file.
The borders (coastlines) of the continents underwent a number of changes
since the split. Often, chunks of land were washed away with water,
slowly or in bigger portions. The coast was generally "smoothed" by the
ocean currents too, and in some places more land was added with the
material that the ocean currents brought.
Then, the tectonic plates continue to move, so this adds to the changes of the shape of the continents.
