Yes, they both sound natural. By the way, here's a useful tip for you. If you're ever unsure about a collocation sounding unnatural, go to Google and search the collocation within quotation marks and see how many EXACT results you get of that example. For example, searching "safeguard the environment" yields almost 4.9 million results. However, if you're still unsure, I like to check the "news" tab in Google to see it used in publication. Searching "safeguard the environment" under the News tab will show about 9,000 results of that phrase or near it. The only thing I would change is the very end. "These two methods can easily be made a part of most people's daily routines." Just to make it sound smoother.