The first line of defence (or outside defence system) includes physical and chemical barriers that are always ready and prepared to defend the body from infection. These include your skin, tears, mucus, cilia, stomach acid, urine flow, 'friendly' bacteria and white blood cells called neutrophils. Hope this helps.
Answer:
Explanation:
Mate i didn't understand you Question
The correct answer is number 1 After peeling potatoes and before slicing carrots
Answer:
red
Explanation:
a heart can be multiple colors. but the heart in a body is red
