B is the answer. my aunt has a malignant tumor and that means its active
Advantages:
- It brings a unique species
-muktiple offspring that evolve in a fast time
Disadvantages:
-It takes two people
- It takes time
Hope this helps :)
Hemoglobin is contained in red blood cells,which efficiently carries oxygen from the lungs to the tissues of the body. It also helps in the transportation of carbon dioxide and hydrogen ions back to the lungs.
Explanation:
HIV is a decease that Is caused by sexual intercorse
I would go with c because its tells you right in there that the ecosystem help who lives around that area.
