Pathogens are microorganisms - such as bacteria and viruses - that cause disease. Bacteria release toxins and viruses damage our cells. White blood cells can ingest and destroy pathogens. They can produce antibodies to destroy pathogens, and antitoxins to neutralize toxins
Answer:
A. Cell wall and chloroplast
B. Nucleus (the dark grey circle)
Explanation:
Answer:
A scope built of two systems of lenses ... ==> Compound light microscope
Explanation:
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