Your answer can be either 92 900 000 or 9.29e+7
I believe the answer is A.
When scientific work can be duplicated it is proves a hypothesis is reliable.
For the record, in science, hypotheses can never be proven correct, and they always require evaluation. Even if a hypothesis still holds after being tested many times, it will always remain open to question.
The correct answer would be B
Answer : Cardio training
Explanation : Cardio exercise helps improve lung function , strengthens your heart and improve your endurance and increases lung capacity. The peoples do cardio is burn calories and lose the weight.
Cardio helps decrease your heart rate and blood pressure and improve your breathing.
