Sequence START HERE Organ Liquid waste (Urine) enters to the excretory system travels through the 1 2 3 Renal Artery 5 6 7 END Urine Expelled Outside the body Guide Question: 1. What major organ of the excretory system removed urea and salt from the blood? 2. The body produces three kinds of waste such as gases, solid waste products and 3. What do you meant by excretion? Explain it in 2-3 sentences.​