a proton located in the atom is the nucleus
The answer to this question would be D.) Permafrost prevents penetration of deep roots.
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Answer:
The oxygen molecule O2 is considered a molecule but not a compound. This is because O2 is made of two atoms...
All the spheres interact with other spheres. For example, rain (hydrosphere) falls from clouds in the atmosphere to the lithosphere and forms streams and rivers that provide drinking water for wildlife and humans as well as water for plant growth (biosphere).
Answer:
"The smallpox vaccine does not contain smallpox virus and cannot spread or cause smallpox. However, the vaccine does contain another virus called vaccinia which is live in the vaccine. Because the virus is alive, it can spread to other parts of the body or to other people from the vaccine site."
[Copy and pasted from a medical website]
