Problem: What is the missing first step of the following process: - They process it with millions of tiny nephrons - Remove all the waste - The kidneys return the blood back to the body through the renal artery - Send the urine with the waste to the bladder through the ureters.

A: The kidneys receive blood from the renal artery

Problem: What is the missing first step of the following process: - Waste enters the kidneys - A processing moment in the kidneys let waste and fluid pass - Prevents larger molecules to pass - Fluid goes back to the bloodstream - Bad waste is removed - The final product is turned into urine.

A: Fluid

Problem: What is the missing first step of the following process: - Bloodstream - The pancreas - Insulin lower sugar levels - Bloo sugar goes back to normal.

A: Sugar enters the body

Problem: What is the missing first step of the following process: - Steam is produced under pressure - Flows into a turbine - The turbine spins - Creates electricity.

A:
Coal is burned in a boiler