Why
are fossils almost exclusively found in
sedimentary rocks

In order to become fossilized, an organism must be buried quickly before it is destroyed by erosion or eaten by other organisms. This is why fossils are found almost exclusively in sediment and sedimentary rocks.

Explanation:

Because sediment layers pile on top of the dead animals and compress them to create fossils

it teaches readers about an interesting chinese custom and causes them to determine that the minister is trying to be polite

"choosing is refusing" means individuals face an opportunity cost with each decision they make. economists state that every decision involves trade-offs. opportunity cost is the least desirable alternative given up as a result of a decision.