Sickle-cell anemia is inherited..It is a condition where there are not enough healthy red blood cells to carry enough oxygen through your body...There is no cure for sickle-cell anemia over time damage is done to your vital organs...
A group of cells that performs a similar function is known as tissue.
Answer:
tbh ion know good luck buddy these are hard
1. Algae blocks sunlight from other organisms
2. Kills those that are autotrophs
3. Bacteria in pond will continue to multiply and break down everything dead/deteriorating
4. Bacteria takes over all oxygen supply
5. No life
Answer: arteries carry oxygenated blood away from the heart to the body. Veins carry oxygen-poor blood back from the body to the heart.
