Arock can be broken down into different kinds of substances by physical processes. no chemical reactions are needed to
separate different parts of a rock into pure substances. this is because a rock is aan)
compound
element
mineral
mixture

Which fact supports the conclusion that there will be fewer farm managers in the future? a) a farmer manager’s duties vary by the type of farm. b) farm technology is replacing some administrative jobs c) farm managers often need experience but not education. d) administrative duties include budgeting and training staff.