1. Where is the heart located inside the chest cavity? Based on the functions of the cardiovascular system, why does this location make sense?
PlEASE HURRY

It is placed in the thoracic cavity.

Explanation:

It is suspended within a tough fibrous sac , the pericardium, by its connections to the great vessels: the superior and inferior venae cavae, the pulmonary artery and veins, and the aorta. It makes sense for it to be placed there because it is so close to the repository system that they work together.

to prevent people from getting the ebola virus, countries around the world paid to doctors develop a new vaccine. now that the vaccine has been made, doctors will need to experiment on a large number of people to find out if it works safely.

what is the greatest limitation that scientists are dealing with as they try to figure out how to experiment with the ebola vaccine?

meditation is a practice of sitting still and quiet for minutes or even hours. it has been practiced for thousands of years and is even a part of religious practices for some people. carefully controlled, repeated measurements of brain activity have shown that meditation does increase certain chemicals in the brain and even grows the part of the brain that people connect with their current surroundings and activities.

are claims about the effects of meditation most likely scientific or pseudoscientific?

not pseudoscientific, because people have made claims about it but scientific observations have not been made

take a break move to stretching and slowly work back into physically exercising if the problem continues go to a doctor or physical therapist