True or false Tissues, organs, and organ systems work together to help provide all cells with nutrients, oxygen, and waste removal.

Protein provides 4 calories per gram. mary is on a diet that requires her to eat atleast 40 grams of protein each day. shes eaten 152 calories of protein today. how much more protein does mary need to eat to meet her goal?

Select all of the possible methods of aids transmission.

Although the percentage of teens smoking has gone done in recent years, the number is still approximately percent. question 15 options: 10 30 40 20