The right answer is smelly garbage.
Infestation is the penetration into the body of a parasite whose nature is not microbial.
smelly garbage is not synonymous of infestation, because the olfactory system only detected smelly metabolites of these microorganisms. This does not necessarily mean that the microorganism has managed to penetrate the body.
By cons other proposals are signs and tools for infestation (torn packaging with food leaking out, dead insect bodysuits, feathers, and fur).
A chemical substance that can be formed from the ionic bonding of an anion and a cation would be Al2O3.
An enzyme. An enzyme is a protein speed up a biochemical reaction. It’s a catalyst.
Hope this helps :)
It is milk because milk has lactose
The last option: over tens of millions of years, the giant supercontinent Pangaea began to slowly drift apart forming the continents
