That's not true. You can easily make aself-contained biosphere yourself using just a glass bottle, some water, dirt, and a few select species of plants, algae,

That's not true. You can easily make aself-contained biosphere yourself using just a glass bottle, some water, dirt, and a few select species of plants, algae, or insects/orthopods [0] You can even buy them [1]. [0] https://www.dailymail.co.uk/sciencetech/article-2267504/The-sealed-bottle-garden-thriving-40-years-fresh-air-water.html https://www.dailymail.co.uk/sciencetech/article-2267504/The-... [1] https://eco-sphere.com https://eco-sphere.com