Iceberg Lettuce. It is a really crispy cabbage looking lettuce. It can be dark green or red.
I believe that the answer is D. If something has evolved, it can not interbreed with its old species. I think this is right!
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Answer:
the last answer
Explanation:
over time by co-evolution of adaptations that reduce the harm or improve the benefit of the relationship
- During telophase II, a nuclear membrane forms around each set of chromatids
- The chromatids are again called chromosomes
- The cytoplasm divides through cytokinesis, and four haploid cells form.
<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.
