What percentage of incident sunlight is actually converted into chemical energy during photosynthesis and how?

Answer mauritania is in the northwestern part of african, meaning its in the western hemisphere, and how do i know/ the map showed me so; ///: )

It is useful for historians to write narratives so that history can be passed on from their point of view.  think about a story being told in third person, then think about it again being told in first person, by someone who actually experienced the event.

The correct answer is:   [b]:   "physical systems" .