Is the border between the a freshwater biome and a marine biome?

Where can dna be found in a prokaryotic cell

What processes take place before the mature mrna exits the nucleus?

What are some of the immune functions of the lymphatic system? a. cleaning red blood cells from the blood and creating lymph fluids b. transporting lymph to the tissues and creating lymph fluids c. removing infectious agents and making white blood cells d. making red blood cells and removing infectious agents