Facts-about-gravity-part-1-5-7

Twitter remarketing service is provided by Twitter Inc. You can opt-out from Twitter’s interest-based ads by following their instructions: https://support.twitter.com/articles/20170405 You can learn more about the privacy practices and policies of Twitter by visiting their Privacy Policy page: https://twitter.com/privacy

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Google Analytics is a web analytics service offered by Google that tracks and reports website traffic. Google uses the data collected to track and monitor the use of our Service. This data is shared with other Google services. Google may use the collected data to contextualize and personalize the ads of its own advertising network.You can opt-out of having made your activity on the Service available to Google Analytics by installing the Google Analytics opt-out browser add-on. The add-on prevents the Google Analytics JavaScript (ga.js, analytics.js, and dc.js) from sharing information with Google Analytics about visits activity.For more information on the privacy practices of Google, please visit the Google Privacy & Terms web page: https://policies.google.com/privacy?hl=en

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