A weather condition of new york state that show isobars that are closely together and indicate a steep pressure gradient is likely to represent strong wind.The current wind map show the current wind speed and direction for the most recent hours. For example the Hurricane tropical winds maps show high level of winds speeds directio over the Atlantic ocean.
Answer:
I'm going with B kinetic energy from ocean currents
New seafloor is the answer
Until the early Proterozic there were only negligible amounts of free oxygen in the atmosphere
The resulting erosion at the base of a waterfall can be very dramatic, and cause the waterfall to "recede." The area behind the waterfall is worn away, creating a hollow, cave-like structure called a "rock shelter." Eventually, the rocky ledge (called the outcropping) may tumble down, sending boulders into the stream
