Their bones
Yes since any animals that have been fossilised and end up as petrol are not killed for it (probably). There are environmental concerns but that's unrelated
it is if it is fossilised
they are plants
Amber is lithified tree sap. Small insects and animals can be preserved but not fossilised in amber.
Fossilised
ignious
cranidos
Yes horses can be fossilised. anything can be fossilised as log as it has a skeleton.
As they get a better understanding of prehistoric creatures, and more fossilised specimens are uncovered, peoples perception of what the animals physiological appearance was, changes.
nothing.
Dead Sea is made out of water.