First choice.
You can refer to any bio book to simply give you a brief summary for what each organ do and what juices each organ produce to digest what specific typr of material in your food.
Answer:
You will measure the rate of your pules and how fast its going.
You need to keep the thing you are doing for example( if your running you have to make the people run the same length as every one else.
I hope this helps :)
Explanation:
Answer:
B. Living organisms use matter and energy for their life processes
