Scientists classify rocks based on texture, composition, and how the rocks formed.] Rocks are classified by how they formed.
The preservation technique that
attempts to remove moisture is dehydration or drying of foods. Many types of
food such as meat, fish are preserved for an unlimited period by removing the
moisture. This way, the growth of microorganisms in the food is hindered. Dehydration
is one of the oldest methods of food preservation. Equipment such as cabinet driers
and vacuum driers are used in dehydration.
The right answer is ultrasound.
Ultrasound is an imaging technique that uses ultrasound. It is used routinely in human and veterinary medicine, but can also be used in research and industry.
Contrast ultrasound is one that uses a contrast medium. The contrast medium composed of microbubbles is injected into the bloodstream intravenously at the time of the ultrasound examination of the patient. The microbubbles of the contrast medium are highly reflective to ultrasound during ultrasound examination; thus making it possible to image the blood vascularization of the organs for diagnostic purposes.
