Decomposition
Yes. Viruses are made of the same substances that living organisms are.
Limestone.
Sediment, compressed dead solid organisms.
Sediment, compressed dead solid organisms.
Vaccines for the prevention of the specific viral infection can be made with inactive "dead" viruses. They are also made with live, but attenuated (weakened), viruses. See more below about vaccines.
Because the nutrients from the soil are made up of dead organisms and the roots extract nutrients from the soil and use it so the plant can grow. Decomposers recycle once-living matter by breaking it down into energy-rich substances
Oil comes from fossil fuel and oil is mainly dead plants organisms.
Dead organisms that were living million / billion/S of years ago.
Coral is not made by us.It is made up of exoskeletons of dead minuscule organisms found in the sea which form reefs.
It's formed from the hard outer coverings of long-dead micro-organisms.
Something that is "biodegradable" is made form substances that will break down completely and quickly when exposed to sunlight and moisture (and possibly micro-organisms). A good example is "packing peanuts" made from cornstarch.
Adhesive substances are made from a huge assortment of things.