Which two statements describe organ systems working together to remove wastes from the body?
O A. The digestive system breaks down food into molecules that can
move into the blood.
B. The circulatory system carries oxygen-rich blood into muscles in
the legs.
c. The respiratory system exhales carbon dioxide that enters the
lungs from blood vessels.
D. The integumentary system gives off thermal energy that comes
from blood vessels.

Could someone . i have tried to solve myself but my calculation is off

6–43 a food department is kept at 2128c by a refrigerator in an environment at 308c. the total heat gain to the food department is estimated to be 3300 kj/h and the heat rejection in the condenser is 4800 kj/h. determine the power input to the compressor, in kw and the cop of the refrigerator.

Place several e-field sensors at a few points on different equipotential lines, and look at the relationship between the electric field and the equipotential lines. which statement is true? 1-at any point, the electric field is perpendicular to the equipotential line at that point, and it is directed toward lines of higher voltages. 2-at any point, the electric field is perpendicular to the equipotential line at that point, and it is directed toward lines of lower voltages. 3-at any point, the electric field is parallel to the equipotential line at that point.