I NEED THIS NOW!! No links What does it mean when a substance sinks in water?

It is malleable.

It is not soluble.

Its density is less than water's density.

Its density is greater than water's density.

Which of the following diseases may be transmitted through an accidental needle stick? a. syphilis b. tuberculosis c. cellulitis d. hepatitis b

Why do leaves change color in the fall? green pigments break down and no longer mask the color of chlorophyll. chlorophyll breaks down and no longer masks the colors of other pigments. red- and yellow-colored pigments grow and mask green-colored chlorophyll. green-colored chlorophyll breaks down and turns red and yellow.

Where in the cell are ribosomes made?