express what you have learn in this lesson by completing the sentence firms below
1. i learned that respiratory and circulatory systems__________________
2. i understand that respiratory and circulatory systems __________________
3. i must keep my respiratory and circulatory systems healthy so that _______________
4. i will remember the importance of a healthy lifestyle in avoiding _________________
5. from now on i will____________________
pa help po Sana ung maayos​