When children are young and go to the doctor the doctor will give them booster shots the re-exposes the children to a dead portion of a disease to help them build immunity

Why is excretion necessary to maintain homeostasis?

Drag the correct tiles to the image. not all tiles will be used. the diagram is a schematic representation of the electron transport mechanism in mitochondria. label the diagram to complete the model.

Need with these questions . need the answers in a rush for these questions are the answers i put down are correct or not? ?