Soil horizons are defined by physical features true or false?

How did presidential reconstruction allow black codes to be passed

Which statement below accurately describes the carrying capacity of any ecosystem? a. it is not affected by any abiotic or biotic resources. b. it does not affect the species of an ecosystem. c. it is completely dependent upon the food supply. d. it is affected by both abiotic and biotic resources

Skeleton and keyword outlines are most appropriate for what speech style? extemporaneous impromptu manuscript memorized