The material that is most difficult to recycle is
glass
plastic
aluminum
paper

(99 points) be serious! how do farts work? how do you fart without it stinking? serious answers only

Select all that apply. why are common names not a good reference to a species? common names can be in different languages common names vary with location common names vary with culture common names vary with species color

What are the two causes of density in deep current waters? a. salinity (how much salt) of the water and high temperaturesb. salinity (how much salt) of the water and low temperatures c. oxygen content of the water and high temperatures. d. oxygen content of the water and low temperatures