Answer:
A group of protons and neutrons that are surrounded by electrons I think that's the answer...
Explanation:
To keep<span> noise from entering your space, look for </span>sound<span> blockers</span>
Answer:

Explanation:
The process during which pressure remains constant is called an isobaric process.
Peer review is important because it is used by scientists to decided which results should be published in a scientific journal