Coevolution happens when the genetic development between two or more species affects the evolution of each other. An example would be hummingbirds and bird-pollinated (ornithophilous) flowers. The ornithophilous flowers give nourishment to the birds with their nectar that has high sugar content. The birds in return aids in the pollination of these flowers.
What are your choices?
EDIT
The answer you are looking for would be wood.
Hope I helped!!
The sun and the moon has an effect on the tides when they are nearly in line with Earth during a new moon. This effect is t<span>hey produce a tide with the greatest difference between consecutive low and high tides, or a spring tide.</span>
