Pleas help asap this is for ap chem

Iknow #2 is d. i just need to know why

Design techniques and materials that reduce the negative environmental impact of a structure are referred to as

Plz ill give u brainliest which of the following steps is not likely to take place during cellular respiration? a.oxygen combines with carbon of simple sugar. b. energy molecule transfers energy to cells. d. energy is used up.