Answer:
D. organ systems
Explanation:
Organs and tissues that perform the same function are called organ systems
Answer:
Diffusion
Explanation:
Substances like CO2 and water move into and out of a cell by diffusion from an area of high concentration to an area of low concentration.
Answer:
the ratio of the surface area to the volume is 1:2
The bodies immune response includes all of those cells to help destroy pathogens that wish to bestow havoc on the beautiful homeostasis of the body.
if it is just basic addition is would be 175
