Carbon Dioxide is used in celular respiration. All other choices are waste products
<span>centrosome
thylakoid
(peroxisome)
lysosome</span>
2.2 x 10^-2
0.055 / 250 = 0.00022 - This would be 2.2 x 10^-4, but the question is asking for percent, not proportion, so multiply by 100% to get the percentage.
0.00022 * 100% = 0.022% = 2.2 * 10^-2
Its durability, malleability, etc the basic properties of metals