Use the food web below to answer the following question. Mountain Lion
Snice
Du
Rabb
Caterpi
What role does the grass play in the food web?
O Producer
O Primary Consumer
o Secondary Consumer
Decomposer

the volume increases

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.