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what do u need help with?
Answer:
Soil test is necessary not only for phosphorus but also for the other essential elements. By analyzing the soil we can understand the status of different essential elements in soil and from the results we can make the recommended dose for the particular soil.
C. T cells after a IMUNE response will become memory cells that help fight the virus once again if it enters your body and be more prepared
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the last one is right I think
Answer:
Genetic variation can be caused by mutation random mating, random fertilization, and recombination between homologous chromosomes during meiosis
Explanation:
