The answer is energy, which is stored in the body for later use
When the egg cell is fertilized with the sperm cell, it changes into a zygote. It then becomes a morula and blastula. Then it turns into grastula and neurula where neural plate is transformed into neural tube.. Finally, it becomes a human embryo.
Answer:
They are made up of protein.
Explanation:
Through out the cells life they all need protein to keep function.
Vitamin a stays accumulated in your system and so only a concern if Greg is vitamin a deficient but he is probably getting other sources of vit a in his diet as well
