Which of the following is a chemical change that occurs to the food? A reduction in size of food particles as food is chewed.

The movement of food to the stomach as food is swallowed.

The breakdown of molecules by food enzymes and acid in the stomach.

None of the above

succession returns a disturbed

ecosystem to a more stable state. this is also classified into two (2) types:

primary succession and secondary succession. the primary succession arises when

a new land is transformed and a bare rock has been exposed providing an environment

that can be occupied for the first time. while, secondary succession occurs

when a previously occupied environment was disturbed that kills much of all its

community

explanation: