Ava conducted an experiment to determine respiratory rates during different activities. She counted the number of breaths per mi
nute. Ava noted that the number of breaths increases as physical activity increases. Why is there an increase in the number of breaths per minute as activity increases? As activity increases, more oxygen is exhaled. As activity increases, more oxygen is exhaled. As activity increases, breathing becomes more efficient. As activity increases, breathing becomes more efficient. As activity increases, the oxygen needs of cells increase. As activity increases, the oxygen needs of cells increase. As activity increases, the rate of the heart beating increases.
There is an increase in the number of breaths per minute as activity increases because:
As activity increases, the oxygen needs of cells increase.
Explanation:
<u>When we exercise, our muscles work harder than they do when our bodies are resting. For that reason, the muscle cells need more oxygen - think of oxygen as the fuel we consume; the more we move, the more fuel we need. To provide that extra oxygen the cells need so much, we begin to breathe faster. For that reason, the best option for the question above is: as activity increases, the oxygen needs of cells increase.</u>
The correct answer is all navigation near coral reefs, including anchorages and vessel routing that keep their safe distance and frequency at a minimum and respect all laws of utilization of marine resources and safe transit are not a threat to coral reefs. The threats would be excessive and unsafe navigation, abusive utilization of marine resources, pollution and hazardous material spills.
i'd say it's okay to tell ghost stories to children as long as they aren't too graphic. Ghost stories can be fun to tell around the campfire and stuff.
