It produces lymphocytes, is important for T cell maturation (T for thymus-derived). The spleen is an organ in the upper left abdomen, which filters blood, disposes of worn-out red blood cells, and provides a 'reserve supply' of blood. It contains both red tissue, and white lymphatic tissue. Hope that helped!
Without decomposers, dead leaves, dead insects, and dead animals would pile up everywhere. Imagine what the world would look like! More importantly, decomposers make vital nutrients available to an ecosystem's primary producers—usually plants and algae.

Vacuoles store water, food, and waste. The endoplasmic reticulum (ER) is a series of tunnels throughout the cytoplasm. They transport proteins from one part of the cell to another. Ribosomes are the protein factories of the cell.
<h3>Hope it helps uh...</h3>
Answer:
Despite a generally high security standard, <u>accidents can still happen.</u> It is technically impossible to build a plant with 100% security. A small probability of failure will always last. The consequences of an <u>accident would be absolutely devastating both for human being as for the nature.</u>
Nuclear power plants as well as nuclear waste could be<u> preferred targets for terrorist attacks. </u>No atomic energy plant in the world could withstand an attack. Such a terrorist act would have <u>catastrophic effects for the whole world.</u>