Soil erosion is defined as the wearing away of topsoil. Topsoil is the top layer of soil and is the most fertile because it contains the most organic, nutrient-rich materials. Therefore, this is the layer that farmers want to protect for growing their crops and ranchers want to protect for growing grasses for their cattle to graze on.
<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.
Answer: The superior saggital sinus is located in the falx cerebri.
Explanation:
The superior sagittal sinus also called superior longitudinal Linus is found in the human head, it is an unpaired area located in the falx cerebri. It drain blood from the lateral region of anterior cerebral hemispheres to the confluence of the sinuses.
The requirements for sexual reproduction, is that the species has both a Male and Female gender if they are both this also still applies as long as they don't breed with themselves.Sexual reproduction helps prevent disfigurements, that can end up killing an entire generation of animals and also can lead to a species adapting to environments faster.
Answer: New DNA is made by enzymes called DNA polymerases, which require a template and a primer (starter) and synthesize DNA in the 5' to 3' direction. During DNA replication, one new strand (the leading strand) is made as a continuous piece.
Explanation:
hard to explain
