Answer:
Environmental Tobacco Smoke
Answer:
b. by increasing the heart rate
c. by increasing the respiratory rate
Explanation:
Increased activity of skeletal muscles would require an increased supply of oxygen to these cells to sustain the muscle contraction. Muscle cells perform aerobic cellular respiration in the presence of oxygen and produce ATP molecules to be used during muscle contraction. Therefore, there is an increase in heart rate to pump sufficient blood to the skeletal muscles which in turn ensures enough supply of oxygen. Also, there will be an increase in the respiration rate to inhale the required oxygen.
The estimated energy requirements is 490 kilocalories per day.
For 4-6 months infants EER(kcal/d) = (89 x Wt [kg] - 100) + 56 (89x6 kg -100) + 56 (534-100) + 56 434+56 = 490
That is true. Burning fossil fuels accelerates the carbon cycle.
A hypothesis that is not supported be the data is rejected