5.Por qué en un ecosistema las poblaciones de un nivel trófico superior son menores que las de un inferior

Give an example of a situation in which an individual's pursuit of economic self-interest may not benefit but instead harm the rest of society

The controlled use of fire by hominids: (a) limited the expansion of hominids into certain environments, such as dry grasslands. (b) decreased the amount of food energy available in the hominid diet. (c) contributed to geographical expansion and food production techniques in positive ways. (d) has been shown to contribute little to the digestive process of hominids.

The structure of the federal bureaucracy is well-known as being large and complex. which of the following is not part of the federal bureaucracy?