This could be either c or d because technically, sodium ions and chloride ions are the most abundant, not sodium and chlorine, and there is also a significant amount of calcium in seawater. The answer you're looking for is most likely d but check with your teacher to be sure! (it is not A or B as salt is not an element, but rather a type of compound)
That statement is "false" since the cause is still sort of unknown. Scientists are still working on figuring out why the immune system incorrectly damages and destroys the insulin-producing beta cells from the pancreas, which is how the type 1 diabetes is developed. However, muted genes are surely not a cause.
Let me know if you need further info. :)
- Dotz
B. Amount of sleep
explanation- cause i just know
