People can't drink ocean water. However, in very dry areas near the ocean, people purify ocean water. They must use this process to obtain safe drinking water. The main substance that's dissolved in ocean water is salt, and it must be
removed. Salt water is classified as a
mixture. This kind of mixture can't be separated by
Instead, more expensive methods must be used.
The first ocean water purification method requires heating. This method,
is based on the fact
that water boils at a lower temperature than salt. The second method does not require heating. This method,
has become more common in recent years.
Some parts of the world have contaminated water that causes diseases. Contaminated water has microorganisms,
and forms a
mixture. This kind of mixture can be separated by

Awave has a wavelength of 15 mm and a frequency of 6 hertz. what is its speed?

Awoman whose sister tested positive for a specific mutation in the brca1 gene, which increases the risk for breast and ovarian cancer, is found not to have that mutation but does have a mutation of unknown significance near the known mutation site. how should this woman be counseled? select one: a. she should be informed that her risk for breast cancer is greater than the general population but not as great as her sister’s risk. b. she should be informed that because she does not have the mutation, her risk for breast cancer is not greater than that of the general population. c. she should be informed of her gene mutation status and be presented with all the available prophylaxis options and reconstruction options. d. she should be informed that she does not have the specific mutation but that because another mutation is present she should be vigilant about screening

Which tool could you see a plant cell? a. a filter b. a microscope c. a microwave d. an electromagnet