Light from a distant star has undergone a red shift. which of these conclusions is correct about the star?
a.) its parallax is increasing.
b.) it is moving away from earth.
c.) it is moving towards earth.
d.) its pitch is increasing.

There is a liquid capsule inside a cup full of liquid. the cup full of liquid has salt in it and the liquid capsule has no salt in it. in which direction will the solvent flow? a. the salt does not have to move b. from the capsule to the larger cup c. equally between the capsule and the cup d. from the larger cup to the capsule

Which of the following was a characteristic of a dromaeosaur? modified front claw grasping with their forelimbs both a and b none of the above

14. which of the following codons code for threonine? a. ucg b. ugu c. cga d. aca