Google Ads can show on both the top and bottom of the search result pages (SERP). Ads are identified by a green “Ad” box next to it. More than one ad can be displayed on the SERPs. This causes the organic results to be pushed down further on the page and impact click-through-rates, especially on mobile devices. Google Ads that are displayed are ranked based on relevance to the search query, bidding, quality score and other factors.
Google results on Desktop
Google results on Mobile