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SSSSS [86.1K]
3 years ago
9

Pleaseeeee help meeeeee ASAPPPPPP!!!!!

Biology
1 answer:
klemol [59]3 years ago
3 0

Answer:

The chemical defenses. These include your skin, tears, mucus, cilia, stomach acid, urine flow, 'friendly' bacteria and white blood cells called neutrophils. Pathogenic (disease-causing) microorganisms must make it past this first line of defence. If this defence is broken, the second line of defence within your body is activated.

Explanation:

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