It is identifiable as an animal cell because it lacks a cell wall and chloroplast.
Longest: D. Shortest: A. Strongest: A. Weakest: D.
Clarification: Option A represents the shortest and strongest bond. A higher number of bonds results in electrons being more densely packed and closer together, resulting in shortened bond length. The increased tightness of the bond also contributes to its strength.
Single bonds are characterized as the longest and weakest. Next, we must differentiate between C and D; both choices involve C-C bonds, yet the bond in option D is less strong due to its differing p-character (hybridization).
Carbon dioxide is produced during cement production as a result of burning fossil fuels.
