Oxygen and Moisture
Decay is caused by insects and microscopic organisms breaking organic matter down as a part of their feeding process. When it is too cold for these things to function, then they can't cause decay.
Yes, many things decay and decompose.
Bacteria are prokaryotic cells that cause disease and decay.
No tooth decay is not a sign of cancer. Various other things can be signs of cancer. Tooth decay is natural process that can be sped up by several factors. For example, drinking soda helps sped up tooth decay.
Things that don't decay (or that don't decay quickly) are difficult to digest, for bacteria.
It seals off bacteria, air, and many other things that can cause organisms to decay. If the organism doesn't decay, it remains for... well, forever. As long as it doesn't leave the tar, however! :)
The instability of the nuclei is the basic cause of radioactive decay.
No, not all microbes cause decay. While some microbes break down organic matter leading to decay, others play roles in fermentation, digestion, and other essential processes without causing decay. Microbes have diverse functions and can be beneficial in certain environments and applications.
Medications do not typically 'cause' dental decay, however, some medications can cause a decrease in salivary production. Saliva is important in neutralizing acids that cause decay. Therefore, some medications can contribute to the incidence of tooth decay.
no it doesn't cause decay in adults
Yes. Anything with sugar in it (fructose is a kind of sugar) can cause tooth decay.
Transmutation, which is the change of atoms from one element to another.