I need some views on David Attenborough's documentaries over the years and what do you think about his concern over climatic change and species extinction and what can be done about this issue. (for a project work) (Be respectful)

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.

After railroads, the next revolution of transportation came with the development of (a) automobile (b) telegraph (c) steam engine

Which is a mathematical statement consisting of a hypothesis and conclusion that has to be proven true? definition