There is loads of choices so I could not really tell what the best one is. Although I wouldn't know because I'm a guy so I cant really tell what the best one is. I did look that question up and loads showed up on the right of my screen.
Sorry
Answer:
Interacting with Other Systems
Explanation:
The immune system is like a small police force that constantly patrols every organ and tissue in your body. It works closely with the circulatory system for transportation needs and the lymphatic system for production of lymphocytes.
Answer:
3 years old
Explanation:
"Most children won't be able to feed themselves without spilling until 18 to 24 months of age," Dr. Chung says. "And many children remain messy eaters into their third year."
