Respiratory system is the answer
Answer:
Grains are a good source of carbohydrates with vitamin B complex
Explanation:
Person to person. A common way for infectious diseases<span> to </span>spread<span> is through the direct transfer of bacteria, viruses or other germs from one person to another. This can occur when an individual with the bacterium or virus touches, kisses, or coughs or sneezes on someone who isn't </span>infected<span>.</span>
It would be a negative feedback loop.
and D would be the answer.
Glucagon stimulates glucose to be released into the blood stream, which would happen if blood glucose was low, and insulin stimulates blood glucose to be taken into cells, which happens when blood glucose is too high. The only one that correctly pairs low blood conc./glucagon and high blood conc./insulin is D.
The first line of defence<span> (or outside </span>defence<span> 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.</span>
