What is hemoglobin??

any boudy here -,-

koi zinda ha​

hi here is your answer

Explanation:

a red protein responsible for transporting oxygen in the blood of vertebrates. Its molecule comprises four subunits, each containing an iron atom bound to a haem group.

the unequal cytoplasmic division that  results  in  one egg  and three polar bodies ensures that a fertilized  egg has  ample nutrients  forits journey  to  the uterus.

1. efficient use of space

2. elimination of groundwater contamination

3. energy generation

4. lower carbon footprint