An object will remain at rest or maintain constant , straight-line motion unless acted on by which kind of force ?

true                                                                                                       true true true true true true

photosynthesis makes the glucose that is used in cellular respiration to make atp. the glucose is then turned back into carbon dioxide, which is used in photosynthesis. while water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water.

i believe the answer is snake.

d.embryo is the correct one