What do producers produce?

process by which plants turn water, sunlight, and carbon dioxide into water, oxygen, and simple sugars. organism that eats producers; herbivores. organisms, such as plants and phytoplankton, that can produce their own food through photosynthesis or chemosynthesis; also called autotrophs.

Explanation:

phylogenetic tree is the tree of life or evolution tree. it shows the different branches of evolution. the sequence goes like tissues - coelom - backbone - endoskeleton - segmentation

i believe it is "they are not used up by reactions" as the answer to your question, text me back if this is correct because i just learned this.