Which steps can be taken to make asthma attacks less common and less severe? Select all that apply.

1.) staying inside on high-pollen days
2.) having regular blood tests
3.) having annual vaccinations
4.) exercising and staying active

Which statement best describes the role of the artificial heart? the artificial heart is a good replacement option for individuals who do not want a human heart. the artificial heart has been a great option because it can keep patients alive for a very long time. the artificial heart is not a good option because of the high possibility for rejection. the artificial heart has limited usefulness but can prolong life or be a tool to use while waiting for a transplant.