Answer:
In the microscopic level you can use non-toxic chemicals etc and you can aslo keep the food in desirable temperature inorder to prevent it from being rotten, incase of some food get contaminated you can just not use it because it can make you sick or if it only partly contaminated, then you can use the uncontaminated part of it and not use the other part.
The answer is false because people can cause changes to the ecosystem by doing a lot of things like cutting down trees Etc.
Children in China are encouraged to be independent.
I do believe that:
Intrinsic motivation- you strive for a goal for personal achievement
Extrinsic motivation- is a reward that requires a certain achievement of a goal
