D. Weather refers to short-term conditions, whereas climate refers to long-term conditions. hope this helps!
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Explanation:
1. Dura mater: the dura mater is the most superficial layer which is characterized by the folds. The dura mater forms the walls between the hemisphere of the brain that is between right and left halves of the cerebellum. The structure present in the dura mater is tentorium cerebelli and super sagittal sinus.
2. Pia mater: the deepest layer present which is adhered to the tissues of the brain. The cortical gyri blood vesicle are superficial to the pia mater.
3. Arachnoid mater: the middle layer which is characterised by transparent and gelatin-like appearance.
Low levels of estrogen is a sign that the ovaries of a woman are beginning to fail. This is a common occurrence when one is at menopausal stage. Estrogen and progesterone naturally decrease and eventually stops the menstrual cycle. Hope this helped.
4H— Arma biotecnologíca altamente efectiva para la protección del medio ambiente 1V— Ámbito donde la biotecnología Y las técnicas de bioingeniería Han encontrado un eco de mayor resonancia. 2V—-