What is a waste product of cellular respiration and how is it removed from the body?

Did the proportion of the amount of dissolved salts in seawater greatly increased over hundreds of millions of years? Through what structure do red blood cells move in single file? Can a hurricane destroy an aircraft carrier? The senses acts as the alert system reacting to what? What state is near 3000 sq miles? What is the scientific name of our current era? What is the time difference between Dallas Texas and Tampa Florida? How can you sue your utility company con Edison? What is the name of the land mass suronded by water? Who are the top 5 you-tubers? Does sicklecell trait cause tiredness? What can you do to reduce effects of climate change? How do most plants take up nitrogen? Why do you need enzymes? What are the lipids part? What is the Kinetic Energy of the trolley at the top of the ramp if a trolley of mass is 25Kg and is released from the top of a ramp which stands at a height of 3m? What is the tendency of the body's systems to maintain a relatively constant or balanced internal environment? What is the natural disasters in Luxembourg? What stores separates and serves as a cell's transport system and lacks ribosomes? Why is luminosity so important?