。☆✼★ ━━━━━━━━━━━━━━ ☾ ━━━━━━━━━━━━━━ ★✼☆。
- To keep our oxygenated blood and our deoxygenated blood separate.
Having 4 chambers allows these 2 types of blood to reach their appropriate destination without getting mixed up.
Have A Nice Day ❤
Stay Brainly! ヅ
- Ally ✧
。☆✼★ ━━━━━━━━━━━━━━ ☾ ━━━━━━━━━━━━━━ ★✼☆。
prophase
Further genetic variation comes from crossing over, which may occur during prophase I of meiosis. In prophase I of meiosis, the replicated homologous pair of chromosomes comes together in the process called synapsis, and sections of the chromosomes are exchanged.
Hope it helps!