Trilobites are found worldwide and evolved rapidly, making them easily distinguishable from trilobites of other time periods
Plants have a cell wall and chloroplasts; animal cells do not have either
Hope this helps : )
The right option is c. consumed
in place of; consumed together with
A substitute is a good that is consumed
in place of another good, and a complement is a good that is consumed together
with another good. Substitutes serve in place of another and complements make
something seem better.