The energy potential from the sea is quite large but efficient commercial exploitation is difficult . explain .
class 10

You can find results and justify them? you can test your hypothesis

The answer is trial 3.

Shania is trying to determine the oldest geologic unit on this map and the reason to why is she unable to do so is that  the units are all the same age.. when there is the same age, there will be no oldest geologic unit and that i cannot be credible.