Answer:Pedometer
Explanation:bc it counts how much steps you took but also shows how much your heart is beating
For preventing stds use a condom birth control or abstinence
Eating breakfast helps boost metabolism because it gives you energy
the answer is A all of the answers are correct
Answer:
Explanation:
The differnce between the two is from person to person it is by bodily fluids and environmental is through or could be an airborne diesease
