Which of the following statements is true about photosynthesis and cellular respiration? Both photosynthesis and cellular respiration occur in all living things.
Only cellular respiration occurs in all living things.
Photosynthesis occurs in the nucleus of the cell.
Only photosynthesis occurs in all living things.

idk what happened..you tell

answer; synapse;

answerblank(1) epidermis; blank(2); dermis;

during expiration the diaphragm relaxes, which causes the diaphragm to move downwards. the contraction of diaphragm increases the space for expansion of lungs. hence, the diaphragm relaxes and positioned downward during expiration.