Answer:
We breathe in air which has a higher concentration of oxygen than carbon dioxide and we breathe out air with a higher concentration of carbon dioxide. Both the gases are present in the inhaled and the exhaled air.
Answer: The Center for disease control and prevention (CDC) uses the Body Mass Index(BMI) to determine categories of overweight and at risk for being overweight
Explanation: BMI is defined as the body mass of an individual divided by the square of their height.
The BMI is used to categorize a person as underweight, normal weight, overweight, or obese based on the ratio of their body mass to the square of their height.
Underweight are categorised to have a BMI of under 18.5, normal weight has a range of 18.5 to 25, overweight has a range of 25 to 30, and obese over 30. The unit for the BMI is the kg/m²
The airport and highway systems in Atlanta make it a major transportation hub.
Answer:
1. Firefighting and medical assistance
2. Education
3. Inspection
Explanation:
A fire department is an organization that delivers firefighting services. They are alternatively referred to as fire brigade, fire service or fire authority. They operate within a region or district (for easy access) and are usually public owned.
The ways in which a fire department helps communities include;
1. As the name implies, the fire department delivers firefighting services by putting out fires. They put out fires from buildings, rescue victims that are stuck in burning buildings and offer emergency medical assistance to such victims.
2. They also carry out orientation programs that educate the community by teaching them safety initiatives, fire prevention tips and what to do when there is a fire before the fire department arrives.
3. The fire department also carries out inspections on buildings so as to make sure buildings are safe and reduce the impact any fire emergency could cause.
Mitra found it better because students or people learn better in groups rather than being single.
Explanation:
Group learning is always better than learning rather than learning single. People in group can discuss on a certain topic which they learn. The discussion learning is helpful in solving greater ability to view situations from others' perspectives.
Students can discuss their doubts without any fear. But when it comes to media, the role of the media is spreading information on a large scale. Media is a one such platform which provides information more people at a same time. People who are in group can discuss the news or information in details and clear their views on that piece of information.