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when do spindle fibers first become visible?

question options:

prophase

telophase

anaphase

metaphase

Why would a drug the damages capsids treat a viral infection

When you run, you begin to breathe heavier and faster. your heart beats more quickly, bringing more oxygen to your cells. which organ systems are working together here?

The picture represents a structure of the respiratory system. which is the function of this structure? to bring air into the body to exchange oxygen with carbon dioxide to carry air to the lungs to release oxygen from the body