Which star has the greatest luminosity? A)
Barnard's star

B)
Procyon

C)
Alpha Centauri

D)
Rigel

2. given that most biochemical (other than coal) rocks react with hydrochloric acid, what does that tell you about organisms?

Amniocentesis is a process in which amniotic fluid is taken from the mother's womb to identify any genetic abnormalities in the fetus. how would the discovery of the human genome contribute to this process?

Which factor that affects biodiversity?