The tadpoles take their food from the yolk of an egg. The egg yolk is equivalent to the placenta. T<span>he </span>placenta <span>attaches itself to the uterus to provide the </span>developing<span> foetus with blood and oxygen.</span>
Answer:
At least 400 micrograms (mcg) of folic acid daily
Explanation:
Taking folic acid helps prevent neural tube defects.
Answer:
A. Negative feedback mechanism
Answer:
The circulatory system is made up of blood vessels that carry blood away from and towards the heart. Arteries carry blood away from the heart and veins carry blood back to the heart. The circulatory system carries oxygen, nutrients, and hormones to cells, and removes waste products, like carbon dioxide
Explanation:
Okay yayaya 20 seconds have passed and I didn’t lols I bored
