Why does oil prolong the life or car parts

The ph of carrots are 5.0 how it is classified a.acidic b.basic c.indicator d.neutral

Harvey mixes two liquids. which observation of the new mixture most likely indicates a precipitate is forming?

Which are examples of how technology has advanced scientific understanding.1using hot water to sterilize medical equipment.2transplanting a human organ into another individual.3inserting genes from one sheep into another cell to make a cloneunderstanding the different structures that make up a cell.4examining microorganisms from the deepest parts of the ocean