D. Immune System
Reproductive system is an obvious wrong answer, nervous system works with your nerves, and muscular is strength.
Answer:
true. force times distance equals work.
It is a completely true statement that the <span>created "kinds" like "species" is not easy to define. The correct option among the two options that are given in the question is the first option. I hope that this is the answer that you were looking for and the answer has actually come to your desired help.</span>
Chemokines act as chemoattractants. They lead <span>to the migration of immune cells to an infection site so they can target and destroy invading bodies such as microbes. Hope this helps.</span>
