December 21, 2020 will be one of the four special days of the astronomical calendar related to seasons. On this date, at what latitude on Earth is the Sun located at the zenith at noon? Give your answer both in degrees as well as the special name given to this Earthly latitude.

Write a 150-word essay describing the effect of people's activities on the environment in the region.

What would have happened to portugal’s trade if they had not found a way to sail around the tip of africa

Why might a single rock layer exhibit different types of sedimentary rocks within it? view available hint(s) why might a single rock layer exhibit different types of sedimentary rocks within it? such a rock layer, termed a facies, when traced laterally represents a variety of depositional environments that formed in a sequence over time. such a rock layer, termed a facies, when traced laterally represents a single depositional environment that formed over time. such a rock layer, termed a facies, when traced vertically represents a variety of depositional environments that formed at the same time across a broad area. such a rock layer, termed a facies, when traced laterally represents a variety of depositional environments that formed at the same time across a broad area. such a rock layer, termed a facies, when traced vertically represents a variety of depositional environments that formed in a sequence over time.