Question

2/10
what are strata?

1. layers of sediment formed into rock
2. different forms of zircons
3. a type of fossil

Explanation:

Strata are distinct horizontal layers of sediment that over time become lithified into sedimentary rock, matching the first option. The other options are incorrect: zircons are mineral grains, not strata, and strata are not a type of fossil.

Answer:

1. layers of sediment formed into rock