Answer:
Once a person has developed mumps they remain immune to that disease for the rest of their lives. Therefore if they come in contact with the virus again their immune system recognises the virus and eradicates it. To improve your immune system you can eat healthy and exercise often.
Explanation:
The answer would be B) oxygen. In the electron transport chain, oxygen is a reactant. It reacts with 4 electrons and 4 hydrogens to form 2 water molecules. NAD plus is a product of NADH losing an electron. FAD is a product of FADH2 losing an electron.
A nucleus is the central and the most important part of an object, movement, or group.
It is found in plant and animal cells and an atom.
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Testable questions can be answered through investigations that involve experiments, observations, or surveys. Testable questions are answered by collecting and analyzing evidence that is measurable. Testable questions relate to scientific ideas rather than personal preference or moral values.
All of the energy that drives Earth’s rock cycle comes from Earth’s interior and the sun. If erosion did not occur, no
rock cycle would happen. It would end up having large amounts of igneous,
metamorphic and sedimentary rocks. No finer rocks can be found and no flat
lands can be seen.
