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.
The correct answer is complex carbohydrates.
Complex carbohydrates are a type of carbohydrate that digests slowly compared to simple carbohydrates. Complex carbohydrates are also called polysaccharides, because they consist of a number of sugar molecules bonded together. Complex carbohydrates (in moderation) are considered healthier than simple carbohydrates because they do not spike blood sugar levels, but help to maintain proper blood sugar levels. Complex carbohydrates are abundant in wholegrain cereals and pastas, sweet potatoes, brown rice, etc.
Answer:
I'm thinking it's caused by blood clotting up
Explanation:
