yes
What toxic waste? Some toxic waste gives off radiation, some doesn't
yes
Usually waste heat.
Most animals give off carbon dioxide as a waste product for life. This is called "aerobic".
Methane is given off by animals as a waste gas.
Oxygen is given off as a waste product.
Radiation from radioactive waste can pose serious health risks if not properly contained and managed. Exposure to this radiation can damage living tissue and increase the risk of cancer and other health problems. Effective disposal and storage of radioactive waste is essential to protect human health and the environment.
Because they are important to our ecosystem
as much as it can
They just go in the ocean. An interesting tidbit is that whale waste may actually help the environment by removing carbon from the ocean water:
CaRbon dioxide.
Oxygen