Best illustrates why carbon is so important to living things

Which sentence best describes the relationship between chlorophyll and the chloroplast? a.) chlorophyll is a chemical found in a chloroplast. b.) chloroplast is a chemical found in a chlorophyll. c.) both chlorophyll and chloroplasts are found in animals. d.) both chlorophyll and chloroplasts make carbon dioxide.

What's the waste product of electrons and pyruvate combining in fermentation?  

Which factor affects the force of gravity between objects? check all that apply. direction distance mass shape time