In 1890, a hundred European starlings were released into New York’s Central Park. They now number over 200 million throughout North America. This is an example of what factor that affects survival of different species?

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