Answer:
Yes, swollen lymph nodes are more common than some might think.
Explanation:
The medical terms for swollen lymph nodes are adenopathy or lymphadenopathy.
Lymph nodes play a vital role in fighting off sickness in the body. They act as a filter, trapping bacteria and viruses before they can spread too far.
Lymph nodes <em>typically</em> swell up as a response to bacteria or viruses. Though cancer can be a factor in swelling, it is very rare. Most commonly they are felt right below the corner of the jaw, in the neck. Yet, they are not only in the neck; they are all throughout the body. When they are swollen, they might feel tender or even painful.
It should be C. the core because the heat is caused by the radioactive decay deep in the interior of the Earth
The answers that apply are A and B. natural selection affects all populations, and changes to one population will no doubt affect the other. For instance if the prey population doesn't survive, then the predator population might have less food or have to turn to a different population.