The hydrogen and helium in our solar system were created from subatomic particles about years ago. a. 14 billion b. 10.5 billion c. 7.0 billion d. 4.5 billion

The correct answer is: a. 14 billion.

According to Big Bang theory, during the formation of the universe 14 billion years ago, only the hydrogen and helium were formed (with a trace of lithium and beryllium). Other elements were created in nuclear reactions (in huge stellar explosions).

well, you see. the answer to your question is quite simple. the thing that is big, powerful, and over 9,000 is your mom.

as in mitosis, dna replication occurs during interphase.   in meiosis, it occurs specifically in s phase of interphase 1.