Which of the following organs aids in digestion?
a. liver
b. gall bladder
c. pancreas
d. all of these

Which of the following can be reduced by the use of renewable energy sources? a. social costs b. economic costs c. environmental costs d. all of the above select the best answer from the choices provided a b c d

Number and variety of living organisms includes genetic, species, and ecological types

Can create a hboth of these instruments can measure wind speed. doppler radar and psychrometer anemometer and hygrometer doppler radar and anemometer radiosonde and psychrometer