Answer:
I think it might be B
PLS TELL ME IF I'M WRONG!
What is reaction b being portrayed as? There’s no image
A chemical reaction is usually accompanied by easily observed physical effects, such as the emission of heat and light, the formation of a precipitate, the evolution of gas, or a color change. Absolute confirmation of a chemical change can only be validated by chemical analysis of the products.
Answer:
a group of phagocytic white blood cells
Explanation:
Excretory as in excretes things..... anus, bladder, etcetera release waste products.
In cells, the vacuole disposes of waste.
Sweat glands secrete, well, sweat, which can also release toxins from the body.
That's about all I can think of at the moment...