Correct. And what is our science teacher who is required to teach creation to do with this?
ELOHIM, who is usually described as a spirit with no bodily features, creates the entire universe in 6 days in chapter 1 of Genesis. When he gets around to creating humanity on the 6th day, he creates male and female together.
JHVH, or Yahweh (originally mistranslated as Jehovah), who is a humanlike deity who walks with Adam and Eve in the garden and shows his hindquarters to Moses, creates everything in one day in chapter 2 of Genesis, except he only creates a male, and then decides later to create a female from his rib.
Imagine our biology teacher explaining those two contradictory versions of craetion to a class and then asking them to talk about them from a scientific perspective.
Which one of these Gods did all this creating, anyway? ELOHIM in 6 days, or JHVH in one day?
The questions that you ask have no answers that are known.
The Jewish people have traditions that ELOHIM and JHVH are the same personage, however we are not told that definitively anywhere by Moses (Moshe) or any of the other authoritative prophets.
If you are a Christian, then it is easy to allow that ELOHIM can be the "Father" spoken of by Christ and by St. Paul in the N/T, and YHVH can be either the Holy Spirit or Jesus, at any rate, some other personage.
If your Christianity is fettered with the dogma that the Father, the Son, and the Holy Spirit are all-in-one, a major issue that was debated at the early councils in the 4th Century A.D. (C.E.), then there arises a bit more confusion and less flexibility in belief.
As far as the creations, whether there was one or there were two or even billions, that we do not know. I would presume that there have been many, because I cannot imagine that the Earth is the only creation.
As I said, if you read the Biblical scriptures in their original languages yourself, then you are not burdened nor confused by the creeping-in of odd false dogmas into the English translations.
You can learn Hebrew in about a year, and Greek in about two or three. There are classes available at your local community college.
If you are going to ask questions like this, you need to do some significant learning, to be able to answer them. And existentialist philosophy would require you to do it yourself, and not trust anybody else to do it for you.