How would u approach the first one, #54
Answer:
Bolus is the food that is mashed up in your mouth. After it is digested in the stomach, the food is called chyme. Bolus is more alkaline than chyme because it is exposed to alkaline saliva.
Explanation:
The kidneys remove any waste that is not needed in ur body then ur bladder lets all the waste out
A wheelbarrow is not an example of a pully