Answer: humans have 23 pairs of chromosomes
and a total of 46 chromosomes
Explanation:
Answer:
B is oldest because it is at the bottom which entails that it is the oldest.
Explanation:
Answer:
Nebula: is an interstellar cloud of dust,hydrogen, helium and other ionized gases.
protostar: is a very young star that is still gathering mass from its parent molecural cioud.
Red Giant: is a luminous giant star of law or intermediate mass in late phase of stellar evolution.
Answer: i would say the first trimester
Explanation:
C. How long does it take a paper bag to break down?