Which of the following characteristics are not common to snails and slugs? A stalked eyes and antennae
b foot on the underside of the belly for movement
c. radula
d. tentacles extending from the body

Which of the following statements is true of enzymes? a)they dont provide an active site for substrates to bind in a reaction b)they act on a specific type of substrate in a reaction c)they unusable after a reaction d)they change shape after a reaction

How can we use spectral lines of light coming from the superclusters to identify which is receding from earth at the slowest rate.

Which describes the changes in the earths motion?