It’s diffusion, net passive movement of particles (atoms, ions or molecules) from a region in which they are in higher concentration to regions of lower concentration.
Answer:
Each country competing in the games has at least one of the symbol's colors in its national flag
Explanation:
Because this is the only one that it could actually be, this is the only one that is a good answer.
The answer is none of the above
Humans and animals need oxygen to survive so oxygen in the atmosphere maintains life on earth for humans and animals to breathe to survive
The primary function of all lymph nodes is the production of lymphocytes, which help defend the body against microorganisms and against harmful foreign particles and debris from lymph before it is returned to the blood stream. The major clusters of lymph nodes are in six areas.
