Do you think 21 days is enough time to observe the moons phases

In the developed world, describe the changing role of women in agriculture.

In wegener’s evidence for continental drift, continents were proposed to fit together, such as the east coast of south america with the west coast of europe. east coast of africa. west coast of greenland. lower west coast of africa.

Plzz on what physical process is responsible for the creation of volcanoes, earthquakes and ocean trenches at the plate margins?