Answer:
Animals, Humans, Oil, Gases, And Coal all contain Carbon Dioxide in our atomosphere.
Explanation:
Answer:
The ring of fire is an area around the pacific ocean where there is a lot of volcanic activity
Explanation:
<span>Cytotoxic t-cell subpopulations are specialized to combat intracellular pathogens, whereas helper t-cell subpopulations are specialized to combat extracellular pathogens.
</span>Cytotoxic t-cell are CD8+ cells. Cytotoxic t-cell uses granzymes to <span>kill </span><span>intracellular bacteria, that lives in the cytosol such as viruses. They identify the pathogen forgein peptids that are bounded to MHC-I on the cell surface.
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cd4+ T helper (Th) cells include Th1, Th2, and Th17 cells. They contribute to aliergic reactions and fighting extracellular parasites.
The visible light spectrum is the segment of the electromagnetic spectrum that the human eye can view , witch is 380 to 700 nanometers
