Answer:
The spacecraft went into a spin as a result of the inflatable airlock being ejected in preparation for re-entry. Their oxygen levels continued to climb to dangerous levels inside and a single spark could have caused a massive explosion and vaporized the entire spacecraft.
siliceous
Deep seafloor deposition in the form of ooze is the largest long-term sink of the oceanic silica cycle (6.3 ± 3.6 Tmol Si year−1). As noted above, this ooze is diagenetically transformed into lithospheric marine chert.
calcareous
Calcareous ooze is a calcium carbonate mud formed from the hard parts (tests) of the bodies of free-floating organisms. Once this mud has been deposited, it can be converted into stone by processes of compaction, cementation, and recrystallization. ... Foraminifera are also single-celled organisms.
D.they dis not want the goverment to regulate them.