Which mixture can be separated based on differences in particle size of the components? check all that apply.

Aknife blade is a(n) a. lever b. screw c. wedge d. inclined plane

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.

Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?