A theory is a proposed explanation for an observation
D, carbon dioxide and water. Methane and oxygen PRODUCE carbon dioxide and water in their reaction.
I think the correct answer would be A. When a polonium atom with 84 protons, 124 neutrons, and 84 electrons undergoes alpha decay, a lead atom would be produced with 82 protons, 122 neutrons, and 84 electrons together with an alpha particle having two protons and two neutrons.
1. option C. cellulose
2. option A. angiosperms (I found in Internet that they represent 80% of the green plants)
