(C) they used trans-Saharan trade route to acquire expensive ivory.
A producer is like grass, then consumers like a zebra will eat the grass, and wen the zebra dies its body breaks down and helps more grass grow. That cycle keeps going over and over, it never ends.
ATP consists of an Adenine base, a ribose (sugar), and 3 phosphate groups
Hope this helps
It’s trueeeee kids, don’t text and drive