Why do leaves fall off of trees during fall and winter
2 answers:
Because the trees go into a different state during the seasons
as the days grow shorter and colder, those changes trigger a hormone in leaf-dropping trees that sends a chemical message to every leaf that says, in essence, "Time to go! Let's part company!"
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It would require that the csf acts exclusively on : Myeloblasts myeloblasts is a unipotent stem cell, which differentiate into one of the effectors of the granulocyte series. It is commonly found in bone marrow.
Answer:
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Explanation:
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Relaxing=Diastolic
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