Answer:
Evolution - It occurs due to the continuous variations and diversifications coming from the past generations
Natural Selection - In this process, the individuals are naturally selected by the environment that fits in perfectly!
Evolution - Driven by natural selection
Natural Selection- Driven by new characters that are the results of mutations
Evolution - Duration of Action Acquires millions of years
Natural Selection - Can be done in a short duration
Evolution - Example ;- Darwin’s finches, bright-colored peacocks, Mexican cavefish, etc.
Natural Selection -Example ;- Tree-frogs are mostly eaten by snakes, giraffes with short and long necks, etc.
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.
The closest answer to that is milk.
In reality milk has a pH of around 6.5 to 6.7, which makes it slightly acidic. However, some sources cite milk as being neutral since it is so close to the neutral pH of 7.0 and I assume your school wouldn’t pay attention to the specifics