Convection occurs in water so I'll say its conduction
<h3>A person without spleen may need antibiotic therapy.</h3>
Explanation:
Spleen destroys worn out red blood cells and provides immunity to the body. Sometimes the spleen may get enlarged, this indicates a infection in the body.
A severe infection in the spleen may need a spleen removal by surgery. any person without a spleen will have a weakened immune system, and may need antibiotic therapy to treat possible infections.
I'm having trouble on this too :(
Energy. The other 90% is lost as heat. This is the second law of thermodynamics.