The oxygen released came from water
Answer:
Nucleus
Explanation:
I know this I've learnt it just today lol. Red Blood Cells don't have a nucleus.
Answer:
mitosis
Explanation:
The zygote undergoes a process known as mitosis, in which it replicates its chromosomes (which carry each parent's DNA) and then divides, resulting in two identical cells. These cells are called totipotent and have the ability to develop into a new organism