I think your answer is D. However I’m not 100% sure.
When baking powder is added to a cake, the acid base reaction it undergoes with the acidic butter produces the carbon dioxide that makes the cake rise.
I'm pretty sure all 4 are subatomic particles but if i had to guess i'd be Photons
The time of day the plants are watered is the independent variable. Keera did everything else the same for each plant.
