It doubles, so the answer is 8 chromosomes.
False. Pure substances that cannot be broken down into simpler substances by ordinary chemical means are called Elements.
Answer: A, the white mice are able to reproduce faster (the mouses only differ in color).
Answer:
immune system
Explanation:
The immune system fights off unwanted bacteria. Think of it as a villian v.s hero thing.
The cell membrane is made up of a phospholipids that are arranged into two layers which are called lipid bilayer.
