In human exchange of gases takes place in alveoli in lungs
In plants it occurs in leaves through stomata
In fishes it occurs through gills
Answer:
Centers for Disease Control and Prevention is the correct answer.
Explanation:
It is important to keep a high level of physical activity everyday day for many reasons. Keeping a high level of physical activity everyday helps keep you fit. It ensures you burn off any excess calories. It also can prevent future health problems. Exercising everyday creates a better habit.
The answer you're looking for is Xylitol I think :)
The student is not pregnant, but the test result shows she is pregnant.